Introduction

This study investigated the cross-disciplinary variations in the generic structure of Introduction sections of 52 Applied Linguistics and 52 Chemistry research articles drawing upon Swales’ (2004) framework, taking into account the new insights proposed by Bhatia (2004), Shehzad (2008), and Lim (2012, 2014). To this end, in addition to collecting quantitative data and conducting frequency and Chi-square analyses, a number of semi-structured interviews were conducted with some Chemistry scholars and Applied Linguistics (ALs) experts for triangulation purposes. The results of the quantitative data analysis indicated that the two disciplines showed significant variations in the frequency with which they used some steps and sub-steps to realize the moves. The results of the qualitative content analysis of the interviews also helped understand why authors in each discipline might use a specific move/step more than the others and why a move/step was frequently used by the authors in one discipline, but completely absent in another. Finally, based on the results, some implications were presented to postgraduate students and novice researchers in Chemistry and Applied Linguistics to help them write effective research articles in their field. The findings of the study could also provide some practical implications for the EAP teachers to help their students become better writers. In addition, some suggestions were presented to genre analysts to help them obtain more dependable results when analyzing the generic structure of various sections of research articles.

Research articles have received a wide interest in discourse studies particularly in genre analysis over the last few decades. A vast number of studies have been centered on identifying the organizational patterns of research articles in various fields. While Introduction section has enjoyed a lot of attention, very few studies have focused on rhetorical structure of qualitative and quantitative research articles. This genre-based investigation reports on a study of the Introduction sections of 15 qualitative and 15 quantitative research articles in Applied Linguistics from five high impact journals published from 2008-2012. Based on Swales’ (2004) move structure model, this study focuses on Move 3 (introducing the present work) and examines how qualitative and quantitative research article writers introduce their work in Introduction section. The analysis revealed that there were similarities in the overall presence and use of steps in both groups, some differences in the overall presence and frequency of directive determinants were obvious which could be attributed to the different nature of these research designs.

Introduction functions as a showcase in research articles (RAs). It motivates the reader to read the rest of the paper. However, writing a well-crafted introduction is a complex task, mainly when the writer generates the manuscript in another language. This study investigated the rhetorical differences/similarities employed in the introductions of RAs published in Iranian and international ISI journals in Computer Sciences (CS) using Swales (2004) CARS model. Two sets of CS RAs (30 each) were randomly selected. Frequency and non-parametric tests were used to examine the differences between the two groups of introductions. The results indicated that M 1 S 1 (Generalizing the topic), M2 1A (Indicating the gap), M3 S1 (Describing the research), M3 S4 (Methods Summary), and M 3 S 6 (Stating research advantages) were used with high frequencies. M 2 S 2 (Announcing positive justification) was absent, and the others were in low preferences. Also, the Analysis illustrated a statistically significant variation between the introductions concerning the use of M3S7 (Demarcating the Research Organization). Findings support genre-based pedagogy in scientific writing classes to make the graduate CS students aware of these rhetorical structures conventional to introductions in CS RAs.