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BY 4.0 license Open Access Published by De Gruyter Open Access May 31, 2022

“Establish a niche” via negation: A corpus-based study of negation within the Move 2 sections of PhD thesis introductions

  • Shuyi Sun ORCID logo and Peter Crosthwaite ORCID logo EMAIL logo
From the journal Open Linguistics


The past few decades have witnessed an upsurge of scholarly interest in the generic descriptions of PhD theses following Swales’ seminal Genre Analysis. Fitted within the Create A Research Space (CARS) model, the thesis introduction plays a key role in justifying research originality/significance, where novice writers engage with academic communities through “establishing a research territory” (Move 1), “establishing a niche” (Move 2), and “occupying the niche” (Move 3). As the hinge of the CARS model, Move 2 (hereinafter EN) is of strategic importance as it enables writers to “sell” their ideas by pointing to the gap/niche in the “marketplace” of previous research, which is typically realized through the co-occurrences of negation alongside other interpersonal language resources. Negation, as a disclaim marker within Martin and White’s appraisal framework, is a prominent linguistic indicator of EN. Nevertheless, little research has systematically examined the use of negation in ENs of PhD thesis introductions. Accordingly, the study investigated negation via the appraisal framework addressing subtypes of negation (disalignment, cautious detachment, unfulfilled expectation) within ENs in the introduction sections of 120 PhD theses. The results showed that disalignment is the most frequent subtype of negation, while “not” and “no” are commonly used as indicators of negation. Our findings also revealed intriguing co-occurrences of negation sub-categories alongside other relevant appraisal resources. The corpus-informed results are expected to shed light on the nature and practice of PhD theses that educators may take into account during thesis writing instruction.

1 Introduction

With the development of English for Academic Purposes (EAP) over the past 30 years, a large body of research has looked into PhD theses and their linguistic features (Paltridge and Starfield 2020). PhD theses are viewed as dialogic in nature considering the language is used to represent real-world realities while acknowledging, negotiating, and constructing social relations in the academic genre (Hyland 2005b, 2007). Accordingly, thesis writers’ abilities to effectively utilize interpersonal language resources so as to clarify authorial stance, engage with alternative positions, and establish solidarity with academic communities are generally perceived as a crucial factor for successful thesis writing (Loghmani et al. 2020).

Interpersonal discourse strategies are particularly vital for the introduction section where thesis writers “create a research space” (CARS, Swales 1990) to justify the significance and originality of research by “establishing a research territory” (Move 1), “establishing a niche” (Move 2), and “occupying the niche” (Move 3).[1] As the hinge that connects Move 1 (what has been done previously) to Move 3 (what the present research is about), Move 2 (hereinafter EN[2]) is of strategic importance since it establishes the motivation for the study (Swales and Feak 2002). Nevertheless, the failure to establish a niche has been recognized as a key shortcoming in thesis writing (Allison et al. 1998). According to Paltridge and Starfield (2020), such failure is in particular intensified by the difficulties in using negative evaluative language, which is typically activated by negations in gap statements, e.g. “has not received much attention” (p. 87).

Negation, as a disclaim marker within Martin and White’s (2005) appraisal [3] framework, combines with other interpersonal language resources to help construct writer–reader relationships at the discourse-semantic stratum (Hood 2006). In academic writing, writers have to take their readers into account, anticipate readers’ expectations, and interface with anticipated conflict with writers’ own positions so as to legitimize the authorial voice (Martin and White 2005). Negation functions as a powerful means for writers to emphasize authorial voice by denying any alternative position and thus it is particularly vital for argumentative genres. As a “mini-critique” (Swales and Feak 2002, 348), Move 2 of PhD thesis introductions is argumentative in nature, where negation is found to be a prominent linguistic indicator in this section (e.g. Paltridge and Starfield 2020). Nevertheless, few studies have systematically examined the forms and functions of negation in ENs of PhD thesis introductions, and the co-occurrences of negation alongside other interpersonal resources in PhD thesis introductions remain something of a neglected issue.

To address the abovementioned research gaps, this study set out to investigate the use of negation in Move 2 of PhD thesis introductions. The researchers probed into the taxonomy of negation and examined the co-occurrences of negation subtypes together with other relevant evaluative resources drawing on Martin and White’s (2005) appraisal framework. The findings are expected to not only enrich our understanding of the appraisal system and offer new insights into the ways appraisal resources are co-articulated, but also enlighten our use of interpersonal language resources which are expected to better inform thesis writing practice and provide implications for EAP instruction.

2 Literature review

2.1 PhD theses

There has been a growing interest in PhD theses and their language features among EAP scholars over the past few decades (e.g. Hyland and Shaw 2016, Soler-Monreal et al. 2011, Xiao and Sun 2020). According to the British convention, PhD theses are the lengthy documents written by doctoral students denoting the culmination of doctoral research and submitted in support of candidature for doctoral/PhD degrees (Thompson 2013). In order to be admitted to the academic community, thesis writers need to exhibit both the competence to independently conduct original research and the ability to produce high-quality pieces of writing (Paltridge and Starfield 2020). As a consequence, the value of PhD theses not only lies in the ideas and arguments being sustained, but also involves their appropriate employment of linguistic and social conventions that the academic community finds convincing (Loghmani et al. 2020). As argued by Hyland (2009), thesis writers have to reinforce their credibility through communicating persuasiveness and a relationship with their subject matter and expert audience. However, many PhD candidates face enormous challenges in conforming to the genre-specific writing conventions (Thompson 2016). Thus, understanding how successful thesis writers project themselves into the particular genre can have implications for the pedagogy and practice of thesis writing as well as contributing to the development of EAP more generally.

Thus far, textual analyses of PhD theses have been carried out at a macro level and/or a micro level (e.g. Bunton 2002, Xiao and Sun 2020). At a macro level, researchers have utilized the Introduction-Method-Results-Discussion (IMRD) model (Swales 1990) to explore PhD theses’ overall structure (e.g. Paltridge and Starfield 2020) or prominent “part-genres” (Swales and Feak 2002, 8) such as PhD thesis introductions (Bunton 2002, Ono 2017), literature reviews (Kwan 2006), conclusions (Bunton 2005), and acknowledgements (Hyland 2004, Peng 2010). The macro perspective stresses form-function dependency and explores how particular communicative purposes are achieved. By comparison, at a micro level, scholars have focused on language features, e.g. lexical diversity (Xiao and Sun 2020), linking adverbials (Lei 2012), and lexico-grammatical stance expressions (Chan 2015) in part-genres of PhD theses. Taken together, previous studies on PhD theses have found similar communicative goals within each (part-)genre which could be realized via distinctive rhetorical strategies and linguistic features.

Among the prominent part-genres of PhD theses, it is widely recognized that the introduction section is a crucial but challenging one, considering its key role in justifying the significance and originality of the research (Bhatia 2013). Since one of the core criteria for assessing PhD theses in most universities is on whether the submission has made original contributions to the specific research field (Bunton 2002), thesis writers need to strategically create a “research space” (Allison et al. 1998, 212). However, this is actually difficult for apprentice scholars for a range of reasons (Bunton 2002), and the failure to create a research space is regarded as a major shortcoming especially in the thesis writing of non-native English speakers (Allison et al. 1998).

Accordingly, the part-genre of the PhD thesis introduction has continued to motivate a large number of studies following the Genre Analysis and the Create A Research Space (CARS) model proposed by Swales (1990). According to the CARS model, an introduction is in most cases realized via three moves: (a) “establishing a research territory,” (b) “establishing a niche,” and (c) “occupying the niche.” The phenomenon is denoted as “rhetorical movement” (Swales 1990, 140), in which a move is defined as “a segment of text that is shaped and constraint by a particular communicative function” (Holmes 1997, 325). To be more specific, Move 1 establishes a research territory by providing background information, reviewing previous research, and defining key terms. Move 2 establishes a niche via indicating a research gap, highlighting the need to extend present knowledge, and/or justifying the need to solve an existing problem. Finally, Move 3 occupies the niche through presenting research aims and hypotheses, stating research value, and outlining the present study.

Move 2 “establishing a niche,” as the hinge of the CARS model, enables thesis writers to “sell” their ideas by pointing to the gap/need in the “marketplace” of previous research (Paltridge and Starfield 2020). As claimed by Bunton (2002), for PhD theses as a genre, the link between Move 1 and Move 3 is of strategic importance because the primary communicative purpose of a PhD thesis is to demonstrate to its examiners that the candidate has made original contributions to knowledge in the targeted field. To this end, negation resources alongside other interpersonal rhetorical strategies are generally used to co-construct ENs at the discourse-semantic stratum (e.g. Swales and Feak 2002).

According to Swales and Feak (2002), the most common way to indicate research gaps is to use negative (e.g. not, no) or quasi-negative (e.g. few, little) subjects, for instance, “no studies/data/calculations to date have…,” “little research has….” At the same time, other interpersonal resources may be added to resonate with (quasi-)negative subjects, such as “to the best of our knowledge, few attempts…,” “however, little information…,” etc. In line with Swales and Feak (2002), Shehzad (2008) summarized three main categories of linguistic indicators used for gap establishment, including (quasi-)negatives, quantifiers, contrastive statements, with three examples cited below.

Example (1)

To the best of our knowledge, no work has been published on the[…] (p. 42).

Example (2)

There is so far very little empirical evidence that communication of defect information among inspectors yields significant gains[…] (p. 41).

Example (3)

However, software visualizations are often too simplistic and lack visual clues for the viewer to correctly interpret them[…] (p. 36).

In Example (1), negative indicator “no” is used to pinpoint the niche that might not have received sufficient attention. Example (2) and Example (3) adopt quantifier “little” and contrastive statement “however,” respectively, to point out the shortcomings of previous research, preparing the ground to accommodate the present work.

Taken as a whole, the move EN of PhD theses has in most cases been addressed from a macro level to investigate how it is realized via different rhetorical steps or how it achieves particular communicative functions based on the CARS model. Nevertheless, few scholars have specifically focused on the EN move from a micro level, not to mention a thorough investigation of interpersonal resources in ENs. This is despite the fact that novice writers may find it challenging to project themselves into academic writing while taking a proper stance to communicate credibility to both subject matters and expert examiners (Hyland 2009, Loghmani et al. 2020). However, as claimed by Bitchener and Basturkmen (2006), interpersonal language resources are generally not explained explicitly to novice writers since “supervisors themselves tend to have tacit rather than explicit knowledge of the features of the thesis in their own disciplines” (p. 6). Furthermore, previous literature of interpersonal strategies in academic texts has by and large concentrated either on research articles or on students’ writing at earlier stages of education (Geng and Wharton 2016). In comparison, the use of interpersonal devices in PhD theses (especially in the introduction sections) still remains vastly under-examined, which is probably caused by the difficulties involved in making a tradeoff between the complex, cognitively demanding task to manually annotate interpersonal language resources (Fuoli 2018) and PhD theses’ sheer sizes (Thompson 2013). Therefore, this lack of attention highlights the value of probing into PhD theses to explore how successful writers take an appropriate stance towards ENs of thesis introductions while establishing credibility and an alignment with the academic community.

2.2 Negation within the appraisal framework

To date, research on negation has been extremely extensive in the area of pragmatics, with the majority focusing on semantic ambiguity of natural language negation (Pitts 2011), metalinguistic negation (Davis 2011), the activation of presuppositions (Seuren 2000), and so on. Their findings have cumulatively demonstrated that negation plays a crucial role in constructing, fabricating, and manoeuvring natural language from contextual, textual, ideational, and interpersonal perspectives (Jordan 1998, Pagano 2002). However, despite the wide-ranging literature with respect to negation within pragmatics, the pragmatic realization of negation as a whole is in essence one phenomenon of negation. In the field of SFL (Halliday 1994), by comparison, negation has not yet been fully explored, especially concerning the discourse semantic functions it performs (Don 2017). Therefore, in order to fill the gap, negation in the present study is examined in light of Martin and White’s (2005) appraisal system, which was developed within SFL and has evolved into a systematic extension of the interpersonal meta-function (Wang and Guan 2013).

It is advantageous to look into negation within the appraisal system because the theoretical framework is “the most systematic analysing tool” (p. 174) laying out a comprehensive typology for exploring interpersonal language resources (Hyland 2005a). Interpersonal resources that were separately scrutinized, such as intensity (Labov 1984), hedging (Hyland 1998), affect (Ochs and Schieffelin 1989), and evidentiality (Chafe 1986), have all been integrated into Martin and White’s (2005) appraisal framework (Xie 2016). Investigating negation within a comprehensive framework is significant since the scope of negation is not confined to the segmental or categorical level. Instead, the potential of negation is achieved through interpersonal meanings “accumulating, reinforcing, or resonating with each other” (Hood 2006, 38) across clausal and sentential boundaries (Lemke 1992, 1998, Martin and Rose 2003). The view is further supported by Chang and Schleppegrell (2011) who found that experienced writers adopt more complicated, diversified interpersonal devices that interact with one another to collaboratively help justify authorial propositions as text unfolds. Drawing on the appraisal system can not only probe into the potential of negation at the discourse-semantic linguistic stratum but also capture the whole picture of how negation is articulated alongside other relevant appraisal features to co-construct interpersonal stances. As argued by Thompson and Ye (1991), interpersonal stances are better to be deemed operating at the discourse-semantic level of texts instead of at the grammatical or lexico-grammatical level of segments.

Within the appraisal system, negation is defined as a dialogic contraction resource for introducing an alternative position into dialogue so as to deny or to reject it (Martin and White 2005). In the area of SFL, negation in most cases has been addressed as one of the several interpersonal language features within the engagement/appraisal system, targeted at inspecting the realization of rhetorical moves and/or effects in academic discourse (e.g. Loghmani et al. 2020, Xu and Nesi 2019). For example, Xu and Nesi (2019) identified a diverse range of high-frequency combinations of negation and other engagement devices (e.g. counter + negation) adopted by Applied Linguistics writers to engage with their discourse community. Their findings serve as evidence to suggest that negation may co-occur with engagement resources to strategically introduce writers’ debatable opposing propositions. According to Loghmani et al. (2020), negation as the third most frequent engagement features in the discussion sections of PhD theses tends to take the form of correlative conjunction “neither X nor Y.” As such, negation functions to introduce and more importantly contradict the dialogic alternatives (i.e. X and Y) that might be ignored or unexpected by the putative readers. Taken as whole, these studies have highlighted the crucial roles of negation in problematizing arguments, introducing writers’ debatable views, and negotiating the potential challenges from readers.

Nevertheless, by comparison, only a tiny minority of studies in SFL have gone so far as to examine the taxonomy of negation and investigate how each category functions to convey an appropriate interpersonal stance (Don 2017, Webber 2014). In this line of research, Webber (2014) classified the functions of negation into making distinctions, correcting assumptions, simply using formulaic structures, and expressing dissatisfaction, disagreement, cautious stance, unfulfilled expectations, and wholehearted agreement. Webber’s (2014) study demonstrated the roles of negation in forestalling possible misunderstanding/criticism, distinguishing authorial view, and clarifying authorial stance on controversial issues. Likewise, Don (2017) pinpointed three main types of negation (i.e. unfulfilled expectations, mistaken idea, and disambiguation) based upon their functions and suggested that each category performs to develop a distinctive evaluative stance in written academic discourse.

The abovementioned research has undoubtedly thrown light on the value of investigating the categories of negation from the perspective of SFL. Nevertheless, generally speaking, negation in SFL has scarcely been addressed as a focal point of study. Rather, it has been discussed, by and large, only as a spin-off to depict upper-layer interpersonal language resources (e.g. engagement/appraisal features). In addition, as proved by Webber (2014), there are still certain amounts of unsolved overlapping issues in the existing categories of negation.

To address the abovementioned research gaps, this study investigated the use of negation in ENs of PhD thesis introductions. The issues were investigated through the linguistic lens of the CARS model (Swales 1990) and the appraisal system (Martin and White 2005), while at the same time incorporating corpus-based discourse analysis (Flowerdew 2012) with the purpose of addressing the following two research questions.

  1. What features of negation are displayed in ENs of PhD thesis introductions?

  2. How do thesis writers use combinations of negation alongside other relevant appraisal devices to represent claims while rhetorically constructing research gaps?

3 Data and methods

3.1 Corpus data

To address the research questions, a total of 120 PhD theses were collected using the University of Queensland (UQ) eSpace advanced search engine. UQ eSpace is the intuitional repository for UQ research publications, encompassing theses written by Higher Degree by Research (HDR) students. The university resource was selected because of the unified taxonomy of research fields as well as the practicality of obtaining the full texts of PhD theses on a large scale. Detailed information about the enrolled PhD theses are shown in Table 1.

Table 1

Information about the selected PhD theses

Field of research School (number of theses)
Engineering Medical and Health Sciences School of Mechanical and Mining Engineering (11)
School of Civil Engineering (13)
School of Pharmacy (6)
Mathematical Sciences School of Mathematics and Physics (19)
Physical Sciences
Chemical Sciences School of Chemistry and Molecular Biosciences (5)
Biological Sciences School of Biological Sciences (6)
Education School of Education (21)
Economics School of Economics (9)
Philosophy and Religious Studies School of Historical and Philosophical Inquiry (16)
History and Archaeology School of Communication and Arts (8)
Studies in Creative Arts and Writing School of Music (6)

The enrolled theses all met the criteria that (a) they were completed by PhD candidates enrolled in UQ, (b) they were submitted for the degree of Doctor of Philosophy at UQ from 2013 to 2020, (c) in each thesis, there was a standalone “introduction” in which a Move 2 section could be identified.[4] The sampling and representativeness of corpus construction sought to address this study’s specific research questions, while the criteria were to ensure comparability across texts. The selected PhD theses were then converted from .pdf format to .txt file using AntFileConverter (Anthony 2017).

For a theoretically grounded scrutiny of thesis discourse, the author employed the qualitative top-down corpus-based approach (Biber et al. 2007) to inductively examine the “introduction” section, classify and segment the three-move schema, and manually extract the targeted move. The approach was adopted due to its functional-semantic focus, which stresses the significance of cognitive judgment for identifying the rhetorical purposes of moves (Cotos et al. 2015, Kwan 2006). As such, Move 2 sections of PhD thesis introductions were stored in 120 plain texts. The corpus was cleaned of tables, figures, formulas, and footnotes that arose in the target introduction section. The whole corpus totalled 23,477 words, with an average length of approximately 196 words per text.

3.2 Identification of appraisal devices and taxonomy of negation resources

3.2.1 Appraisal resources

In this study, negation was analysed drawing on Martin and White’s (2005) appraisal framework, which is made up of three main domains: attitude, graduation, and engagement. Due to the extensive property of the appraisal system (Bednarek 2008, 2009, Martin and White 2005), researchers adopted the approach proposed by Lam and Crosthwaite (2018) to make a compromise between the corpus-based manual annotation and the comprehensiveness of the appraisal system. The framework used in the study is shown in Figure 1.

Figure 1 
                     The appraisal framework.
Figure 1

The appraisal framework.

The attitude domain deals with linguistic resources for construing emotional reactions. It is concerned with affect (expressing emotions), judgement (judging behaviour), and appreciation (evaluating entities). The emotions concerning affect are further categorized into dis/satisfaction (ennui/satisfaction), un/happiness (sadness/happiness), dis/inclination (fear/desire), and in/security (anxiety/confidence). Judgement deals with behaviour towards social esteem consisting of capacity (capable), normality (usual), tenacity (resolute), and social sanction is made up of propriety (ethical) and veracity (truthful). Appreciation is divided into composition (balanced, easy to follow), reaction (attention-catching), and valuation (worthwhile). Attitude resources, featuring positive, negative, neutral/ambiguous polarities, can be either implicitly invoked cued by combined resources in the co-text or explicitly inscribed via lexico-grammatical constructs.

The graduation domain is concerned with linguistic resources which vary the strength of evaluation in respect of focus and force. Focus is undertaken to soften or sharpen the degree of unscalable meaning. In contrast, force functions to down-scale or up-scale the degree of intensification operated over processes, qualities, and modalities, which are commonly regarded as scalable from an experimental perspective.

The engagement domain deals with intersubjective positioning resources, differentiating two main categories: heteroglossic (authorial voicing engaged with alternative positions) and monoglossic (bare assertation). Heteroglossic resources are classified into expand and contract. Expand accedes to alternative positions through unfolding dialogic potential by utilizing attribute or entertain. To be more specific about the attribute resources, authors may distance themselves from alternative views via reporting verbs, while acknowledge happens when authors recognize other sources explicitly. In comparison, authors may draw on modal words and phrases to generate space for diverse dialogic possibilities where such a technique is noted as entertain. To come to contract devices, proclaim is used for authorial intervention when dialogic alternatives are challenged, confronted, or otherwise excluded. Proclaim is further categorized into pronounce, justify, endorse, and concur. Pronounce refers to explicit authorial proposition, while authors may use conjunctions (e.g. “because”) with the purpose of giving reasons to justify a proposition. Endorse involves those authorial expressions that construe external sources as warrantable. Concur is concerned with locutions to openly announce alignment with a proposition realized through concede or affirm. Disclaim serves to narrow the dialogic space for alternative views to be considered, and disclaim markers incorporate counter and negation. Counter refers to the use of conjunctions (e.g. “although,” “but”) when authors supplant and thereby oppose to alternative positions with counterarguments. Negation is adopted to show authorial disalignment with alternative views.

3.2.2 Taxonomy of negation resources

In this study, negation is categorized based on Webber’s (2014) taxonomy, with the overlapping headings combined and renamed in order to refrain from muddling up with other appraisal devices as well as adjusting to the present research. The taxonomy adopted in this study is presented in detail below.[5]

  1. Disalignment: Authors use “no,” “not” to express explicit denial of the corresponding affirmation.[6] Disalignment plays a role in enhancing authoritativeness of the authorial voice by eliminating the discursive space for alternative propositions, for instance, findings in the area are not [negation: disalignment] generalizable (Geng and Wharton 2019).

  2. Cautious detachment: Authors indicate careful detachment by adopting hedging strategies such as “perhaps,” “might,” where the hedging strategies function to limit the scope of propositional content or to reduce epistemic commitment. As such, cautious detachment subtly opens up discursive space for alternative propositions by projecting cautiousness or equanimity while mitigating the degree of denial.

  3. Unfulfilled expectation: The device is adopted to create space for dialogic potential by conveying authors’ dissatisfaction instead of outright criticism (Pagano 2002, Webber 2014). Unfulfilled expectation is realized through emphatic discontinuous phrases which draw on adversative conjunctions as co-textual signals, such as “I do not deny that… but…”, “not just… but…”, “we cannot be satisfied with… but…”.

3.3 Corpus annotation

Based on the abovementioned appraisal system,[7] the corpus was manually annotated using UAM (Universidad Autónoma de Madrid) CorpusTool version 3.3 (O’Donnell 2019). The UAM CorpusTool is an open-source software for text annotation at multiple layers. Accordingly, the tool is particularly suitable for annotating the oft-times overlapping subtypes of the appraisal framework.

Since different scholars might vary in their interpretations of the same appraisal item, one concern with regard to annotating appraisal resources is the potential subjectivity involved in the annotation process (Artstein and Poesio 2008, Coffin and O’Halloran 2006). To minimize any latent subjective judgement, the present study adopted Fuoli’s (2018) step-wise annotating approach to first randomly choose 12 samples. In other words, a total of 244 annotated segments were covered in the sample corpus which accounted for 10% of the data approximately. Then, the selected samples were annotated by the authors and checked for accuracy by two raters to ensure reliability. The raters were both native English speakers who held a PhD degree in the field of SFL and had over 5-year teaching experience. The raters independently inspected each coded chunk and came to a decision on whether they agreed (“yes”) or disagreed (“no”). The Intraclass Correlation Coefficient for the analysis (two-way random, general consistency, k = 2) was 0.797, which was an “excellent” standard of agreement (Cicchetti 1994). After ensuring that no inconsistency existed in coding the sample texts, the rest of the corpus was annotated.

4 Results

4.1 Overview of negation resources

On the whole, there are a total of 180 units of negation (n = 180, normalized frequency[8] = 8.28), accounting for around 14.52% of the engagement resources (n = 1,240, normalized frequency = 45.25) and 7.24% of the appraisal resources (n = 2,487, normalized frequency = 90.75).[9]

Figure 2 
                  Subtypes of negation.
Figure 2

Subtypes of negation.

As for the four subtypes of negation, disalignment is the most frequent one (n = 163, normalized frequency = 7.49), making up 90.56% of the negation resources. The frequencies of unfulfilled expectation (n = 9, normalized frequency = 0.41) and cautious detachment (n = 8, normalized frequency = 0.37) are similar, and they account for 5.00% and 4.44% of the negation resources, respectively (Figure 2).

4.2 Subtypes of negation

4.2.1 Disalignment

Table 2 shows the items of disalignment and their frequencies. The item “not” and “no” are the most frequent indicators of disalignment, making up 69.94% and 23.93% of disalignment resources, respectively. By comparison, “cannot” and “nor” are relatively less commonly witnessed though they are still more frequent than “by no means,” “none,” “didn’t,” “doesn’t,” and “neither,” which only appear once in our corpus.

Table 2

Items of disalignment

Wording Frequency Proportion (%)
not 114 69.94
no 39 23.93
cannot 3 1.84
nor 2 1.23
by no means 1 0.61
none 1 0.61
didn’t 1 0.61
doesn’t 1 0.61
neither 1 0.61

Table 3 summarizes the high-frequency patterns of disalignment. It can be seen from Table 3 that disalignment often co-occurs with counter. As shown in Excerpt 1, the connective “however” supplies the foreshadowed counter, preceding the disalignment indicator “no.” In this case, the co-occurrence of counter and disalignment presents the thesis writer as stepping back from an established but contrary value position, thereby signalling that the writer’s own position is somehow counter-expectational. As such, the writer can more broadly confront that dialogic alternative by expressing the authorial position on the research gap.

(1) (counter) However, there is (disalignment) no meta-analysis investigating the development of diabetes associated with anxiety symptoms and/or disorders.

Table 3

Patterns of disalignment

Pattern Frequency
counter + disalignment (+ counter) 79
(attitude +) disalignment + attitude 70
up-scale/down-scale + disalignment (+ up-scale/down-scale) 60
justify + disalignment (+ justify) 24
entertain + disalignment (+ entertain) 16
pronounce + disalignment (+ pronounce) 11
independent use of disalignment 21

Attitude devices including affect (in/security, dis/inclination), judgement (normality, capacity, tenacity, propriety), and appreciation (reaction, composition, valuation) are likely to co-occur with disalignment resources, and they tend to be explicitly conveyed in a positive mood. Disalignment indicator “not”/“no” may either follow or precede attitude resources, such as the tenacity item “systematic,” which is shown in Excerpt 2 and Excerpt 3, respectively. In the former condition, tenacity is used to emphasize PhD candidate’s efforts on searching literature so as to justify the reliability of the identified research gap. In the latter case, tenacity functions to construct the niche by conveying the writer’s position on the lack of well-organized, thorough research in a certain filed.

(2) A (tenacity_inscribed_positive) systematic search for studies of principals’ thinking about assessment shows that principals’ perceptions of the contexts of assessment in their schools have (disalignment) not received (up-scale) much attention from researchers.
(3) To date there has been (disalignment) no (tenacity_inscribed_positive) systematic attempt to examine this type of Philippic material as a whole in its own right.

In most cases, attitude devices tend to follow disalignment, for example, thesis writers would draw on a combination of counter, disalignment, and tenacity to jointly establish a niche (see Excerpts 4–5). The writers use counter and disalignment to refute the positive mood established by tenacity items (“comprehensive” and “established”), signalling authorial emphasis on the lack of dependable work.

(4) (up-scale) Much of the existing literature in both fields is pertinent to the study of these myths, (counter) but there is (disalignment) no (tenacity_inscribed_positive) comprehensive reference work in this area.
(5) Geothermal, solar thermal, and waste-heat are prime candidates to make use of ORCs, (counter) but there is (disalignment) no (up-scale) fully (tenacity_inscribed_positive) established base of knowledge available to the scientific community on the performance of these types of cycles.

At the same time, however, writers might also construct a research gap drawing on the negative polarity only. As shown in Excerpt 6, instead of combining negation and positive attitude resources, the thesis writer uses an independent negative composition device “unclear” to argue that the existing mechanism is still inexact and requires further investigation.

(6) The mechanism of transportation of haeme iron remains (composition_inscribed_negative) unclear and is different to that of non-haeme iron.

In addition, in Excerpts 7–8, the thesis writers establish a niche by using disalignment to criticize previous studies with regard to their capacity (“successful”) and reaction (“interesting”). As shown in Excerpt 8, attitude resources may even co-occur with each other while establishing a niche.

(7) (counter) While studies have evaluated nest management methods for (up-scale) a wide range of turtle nest predators, (disalignment) no studies have developed a (capacity_inscribed_positive) successful management strategy against nest predation by monitor lizards.
(8) These approaches are (up-scale) often considered questionable (justify) because it is (disalignment) not (composition_inscribed_positive) clear that (reaction_inscribed_positive) interesting, strongly coupled systems correspond to simplifying limits of the gravitational theory.

Disalignment markers would occur close to up-scale (or sometimes down-scale) items, such as “fully” (Excerpts 5 and 10), “a wide range of” (Excerpt 7), “often” (Excerpt 8), and “many” (Excerpt 9). Generally speaking, up-scale devices perform two main functions. As shown in Excerpt 9, up-scale indicator “many” functions to emphasize the large amounts of previous research, counterpointing itself against the gap expressed via disalignment device “not.” In comparison, in Excerpt 10, the up-scale indicator “fully” is fused with a meaning which by and large serves a semantic function while stressing the unfulfilled research need.

(9) (counter) While there are (up-scale) many metrics that can be used during the generation of a model structure from X-ray data to increase the reliability of the structure, such as Ramachandran plots, clash scores, and R-values, these do (disalignment) not provide information on the biological significance of an X-ray crystal structure.
(10) What such studies have (disalignment) not (up-scale) fully investigated (counter) yet in the area of Russian sacred music in the late nineteenth century is the degree of Westernisation of the repertoire and the inner conflicts (whether theoretical or ideological) that led to the inconsistencies outlined above.

It is also common for disalignment to occur together with justify. Thesis writers may justify the reason in a straightforward way after putting forward a research gap (see Excerpts 8 and 11).

(11) It is also (disalignment) not (valuation_inscribed_positive) desirable to throttle the engine in an accelerating vehicle (justify) as maximum engine performance is desired.

In addition, thesis writers may draw on entertain devices to indicate a careful authorial detachment. As shown in Excerpt 12, writers would set out a reason ahead of establishing a niche. Accordingly, such an evidence-based postulation can open up the dialogic space for alternative positions, leading to the effect of lowering the interpersonal cost for any who would advance such an alternative.

(12) (justify) Since the Canadian Government’s (2004) inquiry (entertain) indicated that there is (disalignment) no (up-scale) significant gender difference with respect to intelligence and general abilities, there is (disalignment) no substance to support the idea that boys were “missing out.”

Thesis writers might also adopt pronounce strategies when justifying the legitimacy of the research gap. As exemplified by Excerpt 13, the pronounce items constitute an overt authorial intervention with the purpose of asserting or insisting on the warrantability and value of the proposition related to the justification.

(13) This contention needs to be examined (justify) because it (pronounce) should (disalignment) not be assumed that, when “national unity” is promoted by the ruling elites by disseminating messages through the media, that their interests and those of the people are (pronounce) necessarily the same.

It is worth bearing in mind that disalignment is also likely to be used independently. As the commonly adopted subtype of negation, disalignment usually functions to establish a niche by expressing explicit authorial denial of the corresponding affirmation. Inferred from Excerpts 14 and 15, the independent use of disalignment explicitly points out the gap in previous research by declaring authorial detachment with particular value positions. In fact, such use of disalignment also signals the strength of authorial view without yielding any possibility of dialogic expansion for the thesis writers’ arguments.

(14) (disalignment) No longitudinal or case–control studies have examined the association between modifiable mental health conditions (depression and anxiety) and diabetes in women in Malaysia and the current study examined this relationship.
(15) This firm-level dataset is a balanced panel with one output and three inputs, which has (disalignment) not been used in the literature.

4.2.2 Cautious detachment

Table 4 presents the items of cautious detachment, which are “not,” “whether or not,” and “no.” “Not” is the most frequent indicator of cautious detachment, accounting for 62.50% of cautious detachment devices. The indicators “whether or not” and “no” are relatively less frequent, making up 25.00% and 12.50% of cautious detachment resources, respectively.

Table 4

Items of cautious detachment

Wording Frequency Proportion (%)
not 5 62.50
whether or not 2 25.00
no 1 12.50

As shown in Table 5, cautious detachment frequently goes together with counter and entertain (see Excerpt 16). It is common for thesis writers to first state previous researchers’ attempt to fill a gap and then criticize the solution by pointing out its defects using counter and cautious detachment. At the same time, thesis writers as apprentice scholars tend to use entertain to modestly make dialogic space for other possibilities/positions.

(16) Decomposing the crash count into its constituent components and based on multiple sources of risk (entertain) would (counter) still (cautious detachment) not take into account the societal impact of crashes.

Table 5

Patterns of cautious detachment

Pattern Frequency
counter + cautious detachment (+ counter) 6
entertain + cautious detachment (+ entertain) 5
up-scale + cautious detachment (+ up-scale) 4
(pronounce +) cautious detachment + pronounce 3
(appreciation +) cautious detachment (+ appreciation) 2

Thesis writers may also use the up-scale device to describe an increase in the quantity of previous studies and then counter the position by pointing out research gaps. It should be noted that writers tend to adopt entertain strategies to cautiously detach themselves instead of plainly pinpointing their counter-positions (see Excerpt 17).

(17) (counter) Although research on professional development interventions that support an across the curriculum approach to numeracy is (up-scale) growing, research does (cautious detachment) not (entertain) seem to have focused on how teachers interpret and translate their experiences from such interventions into their classroom practices.

Some writers adopt pronounce together with cautious detachment, where the pronounce resource functions to convey an authorial emphasis on the necessity of conducting research in a less-studied area (Excerpt 18).

(18) Therefore, historical analysis (pronounce) should consider the ancient evidence first and foremost, with the scholar’s approach judged on its own merits (cautious detachment) whether or not it employs theories from sociology, anthropology, or elsewhere.

In addition, cautious detachment might also co-occur with appreciation devices (e.g. valuation, composition), which function to realize authorial evaluations of objects, circumstances, natural phenomena, and so on. As noted in Excerpt 19, the use of composition is to evaluate the complexity of the targeted context so as to explain why the research gap exists.

(19) (counter) However, the application of “standardized press freedom metrics” (entertain) might (cautious detachment) not capture cultural and contextual complexities, particularly when measuring press freedom in (composition_inscribed_negative) complex environments like Pakistan.

4.2.3 Unfulfilled expectation

As shown in Table 6, indicators of unfulfilled expectation include “not” and “no.” Thereinto, “not” is more frequent, accounting for 77.78% of unfulfilled expectation resources, whereas “no” makes up only 22.22% of unfulfilled expectation devices.

Table 6

Items of unfulfilled expectation

Wording Frequency Proportion (%)
not 7 77.78
no 2 22.22

Table 7 summarizes high-frequency patterns of unfulfilled expectation. Unfulfilled expectation commonly goes together with counter and/or down-scale/up-scale (see Excerpts 20–21). As shown in Excerpt 20, the thesis writer adopts unfulfilled expectation and down-scale to establish a niche, which is followed by a comparison of what has been done in the relevant field, aiming to implicitly indicate the value of occupying the niche. Similarly, Excerpt 21 draws on unfulfilled expectation and down-scale/counter to not only pinpoint the research gap but more importantly throw light on its implications for empirical work.

(20) The author did (unfulfilled expectation) not identify (down-scale) any study using the CPM to investigate the extrusion of cells, (counter) but there are studies that concentrate on the invasion of cells into cell clusters or a monolayer.
(21) The relationship between circumstances and effort is (unfulfilled expectation) not (down-scale/counter) just a conceptual issue. It has implication for empirical work.

Table 7

Patterns of unfulfilled expectation

Pattern Frequency
(counter+) unfulfilled expectation + counter 9
(up-scale+) unfulfilled expectation + down-scale/up-scale 8
unfulfilled expectation + attitude 3
unfulfilled expectation + entertain 2

As noted in Table 7, unfulfilled expectation may also go together with attitude resources. For example, in Excerpt 22 the writer adopts unfulfilled expectation alongside inscribed negative tenacity to co-construct gaps in previous research. This is followed by a contrast to a relevant but over-studied area, aiming to emphasize the importance of filling the gaps.

(22) The landscape of Adventist urban mission studies in general has (unfulfilled expectation) not been crowded, and Adventist urban mission studies regarding the United States in particular are also (tenacity_inscribed_negative) limited, (counter) although (up-scale) extensive work has been done on John Harvey Kellogg and the Chicago Medical Mission.

In addition, unfulfilled expectation would also go together with entertain. In Excerpt 23, the thesis writer first draws on unfulfilled expectation to establish a niche and then slightly counters the gap by using entertain to allow for possibilities of dialogistical alternatives.

(23) Dewey left behind him (unfulfilled expectation) no samples of philosophical curricula, (counter) but he did bequeath to us something (entertain) perhaps just as (valuation_inscribed_positive) valuable.

5 Discussion

This study has explored the use of negation in Move 2 of 120 PhD theses’ introduction, addressing subtypes of negation drawing on Martin and White’s (2005) appraisal framework. Three sub-categories of negation, i.e. disalignment, cautious detachment, and unfulfilled expectation, were depicted both quantitatively based on statistical results and qualitatively via a corpus-based top-down approach. According to our findings, at the categorical level, disalignment is the dominant feature, while unfulfilled expectation and cautious detachment account for the second and third largest proportion. At the lexical levels, “not” and “no” are commonly used as indicators of all subtypes of negation. In addition, the results revealed intriguing co-occurrences of negation sub-categories alongside other relevant appraisal resources, which could be accounted for by the nature of negation as well as the conventions of thesis writing.

It has been found that thesis writers commonly employ negation resources, especially disalignment devices. This is perhaps not surprising due to the essence of Move 2 of PhD thesis introductions, where writers have to position themselves in the marketplace of previous ideas, intending to “sell” their own viewpoint by identifying a specific gap which the new “product” can fill (Paltridge and Starfield 2020, Swales and Feak 2000). As such, Move 2 is argumentative in nature and functions as a mini-critique (Swales and Feak 2002). According to Atkinson and Curtis (1998), the language of “gap statements” is typically evaluative in a negative way. This is further supported by Martin and White’s (2005) finding that the frequency of negation is much higher in argumentative and editorial pieces of writing than in news reporting. The argumentation in Move 2 of thesis introductions involves both challenging (and even rejecting) alternative positions and establishing the writer’s own standpoint. Therefore, such argumentation would inevitably involve a great deal of negation resources which are denoted as “features of persuasive writing where contesting positions need to be addressed and set aside” (Martin and Rose 2003, 49).

The findings also show that “not” and “no” are the most regular negation indicators in the patterns. Based on the empirical findings, it can be concluded that these two triggers have more potential in introducing dialogic space and negating alternative attitudes and voices in written academic communication. More specifically, the results show that “not” as an indicator of disalignment, cautious detachment, and unfulfilled expectation is most typically adopted. This is in line with previous corpus-based findings of negation patterns in which not-negations account for a large proportion within more formal written academic genres (e.g. Biber et al. 1998, Tottie 1991). In addition, our results show that “no” as a negation (esp. disalignment) trigger is also highly preferred. This is probably due to the fact that no-negations can be more emphatic than not-negations while expressing judgements (Biber et al. 1998). According to Cheshire (1999), the emphasis is due to the nature of no-negations which represents absolutes at the end of implicatures of usuality and quantity. As a consequence, in our corpora, no-negations create an “overstatement” (Cheshire 1999, 39) and persuade the audience to take on the authorial scope. As argued by Cheshire (1999), both not-negations and no-negations play the role of effective intensifying devices and are vital for securing interpersonal involvement in written communication. By comparison, writers may also convey research gaps by choosing the negative attitude (e.g. “unconvincing”) instead of the combination of negation and positive attitude resources (e.g. “not persuasive”). Adopting such “strongly negative” (Swales and Feak 2002, 351) adjectives may create an intensified authorial stance, generate certain proposition as a fact (as opposed to an assumption or recommendation, see Martin and White (2005)), and thus reduce the discursive space for alternative positions.

6 Closing comments

To the best of our knowledge, this is the first study that has drawn on Martin and White’s (2005) appraisal framework to explore qualities of negation in PhD theses. By probing into the taxonomy of negation in written academic discourse as well as investigating the co-occurrences of negation alongside other appraisal resources related to negation, the study has demonstrated intriguing rhetorical potentials of negation resources and has also offered new insights into the ways appraisal resources are co-articulated in niche establishment of PhD theses. A scrutiny of the taxonomy of negation is helpful for further enriching the appraisal framework, especially complementing the engagement system. The corpus-informed results have shed light on the nature and practice of PhD theses writing that educators may take into account when guiding students into an awareness of academic writing conventions during EAP instruction. As such, the findings of the present study are expected to better inform thesis writing practice and provide implications for developing EAP courses for more explicit instruction in the following ways.

  • First, considering thesis writers inevitably employ a fair number of interpersonal language resources and in particular make use of some dialogic contraction strategies while creating a research space in the introduction sections of PhD theses (Loghmani et al. 2020, Swales and Feak 2002), findings of this study will probably be of interest to novice writers and writing tutors. Academic writing educators might find it helpful to draw the attention of novice researchers to the various uses of dialogic contraction evaluative devices.

  • Second, by exploring the use of negation in PhD theses, findings of this study have shed light on how successful PhD candidates use negation strategies to position themselves and engage with academic communities. Therefore, the findings might also help to raise students’ awareness of the complexity of negation strategy choices which are open to academic writers, and the possible genre-specific reasons for the strategies they select.

  • Third, the qualitative top-down corpus-based approach, by which negation was explored qualitatively across clause boundaries, has allowed us to identify co-occurring patterns within the sentential level. The analysis revealed a tendency for thesis writers to combine negation and other appraisal resources. Inspired by the highly beneficial workshops provided by Geng and Wharton (2019) based on their corpus-based analyses of PhD thesis discussion sections, findings of the present study can be put into practice by offering writing sessions to the Higher Degree by Research students who are working on their dissertations. Students who are offered the chance to interact with these findings and interpretations during the sessions will be able to critically reflect on the possible rhetorical consequences of various evaluative language choices, and to eventually draw conclusions relevant to their own academic writing.

Nevertheless, considering the present study represents only a preliminary attempt to study negation drawing on the appraisal framework, there is still potential for investigating the use of negation in broader academic genres (e.g. research articles, book reviews) from a pragmatic perspective. Besides, the validity and reliability of the present findings could be improved in a number of ways. This is due to the fact that an expanded sample would normally achieve more valid results, though a sample of 30 texts (per group) has already met the minimum requirement for sample size (Roever and Phakiti 2017). In addition, exploring the second move of PhD theses could be regarded as isolated to some extent. It would surely be appealing to track the step-wise development of negation in the full introduction sections of PhD theses drawing on metadiscursive analysis and move analysis which are commonly used in the area of EAP (e.g. Adel and Erman 2012, Tankó 2017).

Furthermore, previous literature has also suggested that the L1 background and the local institutional culture might affect writers’ employment of interpersonal language strategies. For example, Dahl (2004) found that patterning of textual metadiscourse is impacted by both disciplinary culture and L1 background, though disciplinary culture can transcend L1 background in the discipline with a more homogeneous and stable knowledge base (e.g. medicine). In line with Hu and Liu (2018), the present study did not use language background as a criterion for three reasons: (a) such information was rather complicated especially in the English as a Second Language (ESL) tertiary educational context, (b) the information was not available publicly, and (c) the selected PhD theses in our corpora showed no apparent language difficulties and their authors were all awarded a PhD degree at the University of Queensland. Besides, considering the influence of local institutional context on writers’ language choices (Li and Wharton 2012), the present study had intentionally selected theses from a single institution to avoid the potential complication caused by different institutional contexts. Nevertheless, this might in turn affect the generalizability of our findings since they might not be able to be generalized to other institutions.

Given the above implications and limitations, a number of future research possibilities can be suggested. For example, future studies could construct larger corpora and demarcate the development traces of negation in the full introduction sections of PhD theses. Researchers might also explore the use of negation in other thesis sections (e.g. literature review) and academic genres (e.g. research articles). In addition, it might be interesting to compare negation resources in PhD theses written by authors from different L1 backgrounds (e.g. L1 English vs L1 Chinese) or from different institutions (e.g. University of Cambridge vs University of Toronto), in order to explore whether their L1/institutional provenance truly seems to be an influencing factor in the choice of negation devices.

  1. Funding information: Authors state no funding involved.

  2. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission. Ms. Shuyi Sun created the corpus used, conducted the analysis, and wrote initial drafts of the paper. Dr. Peter Crosthwaite prepared the submitted manuscript and supervised the ethics application, analysis, and response to reviewers.

  3. Conflict of interest: Authors state no conflict of interest.

  4. Data availability statement: The data that support the findings of this study are available from the authors but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Data are however available from the authors upon reasonable request.


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Received: 2021-09-23
Revised: 2022-03-29
Accepted: 2022-05-11
Published Online: 2022-05-31

© 2022 Shuyi Sun and Peter Crosthwaite, published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

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