corpus linguistics

In spite of the highly beneficial applications of corpus linguistics in language pedagogy, it has not found its way into mainstream EFL. The major reasons seem to be the teachers’ lack of training and the unavailability of resources, especially computers in language classes. Phrasal verbs have been shown to be a problematic area of learning English as a foreign language due to their semantic opacity and structural differences between English and learners’ first languages. To examine the pedagogic potentiality of the use of corpus linguistics in the context of EFL, the present study aimed at comparing the effect of paper-based data-driven learning (DDL) activities, as a substitute for online DDL activities, with the activities designed based on dictionary entries in terms of their effect on learning phrasal verbs in both short and long run. To this end, the study adopted a quasi-experimental pretest posttest control group design. The analysis of the data collected through an immediate posttest as well as a delayed posttest showed that the DDL activities led to greater improvements by the participants. Based on the results of the study, it is argued that paper-based DDL activities can be used effectively in EFL classes to enhance learning and help learners to become more autonomous in their learning efforts.

In this study, corpus method was used to test an assumption of Conceptual Metaphor Theory (CMT) that systematic and conventionally fixed metaphorical expressions have literal meaning in the source domain. The conceptual metaphors LIFE IS A JOURNEY and IDEAS ARE PLANTS were selected for analysis and three keywords from source domain of the metaphors were chosen and matched with their English equivalents. Hamshahri 2 collection of Farsi texts was selected as the corpus of the study. For ease of processing, one third of the corpus comprising of fifty million word tokens was randomly sampled as the working corpus. Collocates of the source-domain keywords, as realizations of fixed metaphoric expressions, were extracted using AntConc software and their concordances were examined. It was found that 1) in conventionally fixed metaphorical expressions, when source-domain keywords were used metaphorically they had collocates that rarely appeared with the same source-domain keywords used literally, and 2) source-domain keywords had gradable degrees of metaphoricity. The findings were interpreted as suggesting that the meaning of fixed metaphoric expressions may not be systematically connected to the metaphor's source-domain meaning.

This study examined the development of text complexity for the past 25 years of reading comprehension passages in the National Matriculation English Test (NMET) in China. Text complexity of 206 reading passages at lexical, syntactic, and discourse levels has been measured longitudinally and compared across the years. The natural language processing tools used in the study included TAALES, TAALED, TAASSC, and TAACO. To compare the differences across the years at various levels of text complexity, ANOVA and MANOVA tests were conducted. The results suggested that lexical level text complexity revealed the most evident changes throughout the years, lexical sophistication, density, and diversity levels of the most recent years of reading passages have increased remarkably compared to the early years. The syntactic level text complexity indicated a moderate elevation toward the recent years of reading passages. For the discourse level text complexity, regarding cohesion, insignificant fluctuation occurred throughout the years and the general trend was not necessarily increasing. Combined, the results indicated that text complexity of the reading comprehension passages in the NMET over the past 25 years had been steadily increasing by including more low frequency and academic vocabulary, diversifying vocabulary in the passages, and complicating sentence and grammatical structures. The results were further examined against the general curriculum standards and guidelines to analyze whether the changes were reflected in the policies. It showed that the exams required a much larger vocabulary size than the number indicated in the guidelines, suggestions for test designers and pedagogical practices were provided accordingly.

Vocabulary learning is at the heart of language learning and language use. It is what makes the essence of a language. Having it in mind, most of the students always complain about lexical problems, and unfortunately, they are unaware of the different tools, which can help the students to learn vocabulary and improve vocabulary retention. A useful tool for learning and teaching vocabulary is a tool that uses authentic samples to enhance comprehension. Concordancing software is one of these digital tools that enable learners to explore billions of real-world materials. In this regard, the present study was conducted to investigate the actual effect of using this software on vocabulary retention. To gain this purpose, a sample of 54 intermediate female EFL students took part in this study. Participants were randomly assigned to two equal experimental and control groups. Before starting the treatment, the researcher gave the pretest to both groups. Then the treatment sessions were started for both groups, which lasted 12 sessions (4weeks); ten vocabularies were taught in each session and during this time the vocabulary of each lesson was taught by using concordancing software to the experimental group and by using a list of vocabulary to the control group. After the treatment sessions, the posttest was administered to both groups. The results of this comparison proved that the use of concordancing software improved learners' vocabulary knowledge. The outcomes have the potential to affect language learners' performance and teachers' beliefs about the effectiveness of using CALL programs, especially concordancing programs.

As building blocks of coherent discourse, lexical bundles, frequent word combinations that commonly occur in different registers, have attracted the attention of researchers in corpus linguistics in the last decade. The importance of these word clusters lies in their often necessary functional contribution to the development of evolving discourse. While most previous studies of bundles have been mainly concerned with variations in the use of these word sequences across different registers (e.g., conversation, classroom teaching, and lectures) and a number of disciplines (e.g., history and biology), postgraduate genres have not been the subject of adequate rigorous analysis. This corpus-based study explored possible differences andor similarities between two students' genres in terms of the variety, structure, and function of lexical bundles. Through two corpora of master theses and doctoral dissertations in one single discipline of applied linguistics, the study showed that not only was there a large intradisciplinary difference between the two genres in the range of bundles employed, but also there were some striking differences in the total frequency and function of these word combinations. Some implications for academic writing instruction have also been discussed.

Lexical bundles, frequent word combinations that commonly occur in different registers, have attracted researchers in corpus linguistics in the last decade. While most previous studies of bundles have been mainly concerned with variations in the use of these word sequences across different registers, very few studies have focused on their use across disciplines. To address possible disciplinary variations in the use of these word combinations in academic register, this quantitative and qualitative study chose to investigate, compare, and contrast range, frequency, and function of anticipatory it bundles as a sub-set of these word clusters with important metadiscursive functions in published writing. For this purpose, the study zoomed in research articles of applied linguistics and analytical chemistry as a soft and hard science, respectively. The results indicated that generally anticipatory it bundles could be regarded as a distinctive characteristic of academic writing in both disciplines. At the same time, each discipline was found to draw almost on a particular set of it bundles in the development of its discourse. However, analytical chemistry seemed to rely more on these bundles in the development of its discourse. Functional analysis also showed that it bundles served a wide variety of functions in both disciplinary areas. Therefore, this study called for a more robust pedagogical focus on different multi-word sequences like anticipatory it lexical bundles. The findings also highlighted the importance of a more genre-focused EAP (English for academic purposes).

This study analyzed the overlap of motion lexicon, namely manner and path verbs’ frequency profiles, in English high school textbooks (9th-12th grade) and English university entrance exams (2010-2019) in Turkey through AntwordProfile r, a corpus linguistic tool. The manner verbs were sampled from Levin’s study (1993) while the path verbs were gathered from Talmy’s book (2001). The frequency of motion verbs in official teaching materials was compared with their frequency in exam materials using SPSS. The results indicate that the mismatch of motion verbs between the textbook and exam corpora is statistically significant in terms of manner verb frequency levels (p < .000). While path verbs scored, on average, higher in descriptive statistics in the textbook corpus, there was no statistical significance observed. The findings suggest that whenever the students take English exam, they may be more likely to be under a higher cognitive load and may be forced to develop the negative backwash effect since what is taught is not tested. This, consequently, raises concerns regarding the content validity of exams and other issues related to the reliability and validity of the national English exams. The findings of this study have implications for material developers and test takers.