علی اکبر انصاریان

EFL learners’ ability to use advanced and varied vocabulary is a crucial issue in writing performance. This study aimed to investigate the effect of writing task type on lexical diversity and sophistication. The relationship between lexical sophistication and lexical diversity in the narrative, argumentative, and descriptive task types written by upper-intermediate EFL learners was also explored. To this end, 70 EFL upper -intermediate learners, enrolled in advanced writing tasks, were selected as the participants. They undertook narrative, descriptive, and argumentative writing tasks in a counterbalanced way. Then, Vocabulary Diversity (Voc-D) and Measure of Textual Lexical Diversity (MTLD) were used to measure lexical diversity. Lexical sophistication was measured using CELEX log frequency and Beyond 2000 Words (K3+). The writings were pasted into Coh-Metrix measure MTLD, Voc-D, and CELEX. VocabProfiler was also used to measure K3+ of the writings. In lieu of the purposes of the study, the research design involved repeated measures and correlation. Using Multivariate Analysis of Variance and Pearson’s Correlation Coefficient, the findings revealed that lexical diversity varied significantly across the three writing tasks. The highest scores of MTLD and Voc-D belonged to the narrative, argumentative, and descriptive writing tasks, respectively. Moreover, EFL learners used more advanced words in argumentative task type according to the measurement of CELEX and K3+ level words. However, learners' lexical sophistication in narrative and descriptive writings did not emerge as significantly different when measured by K3+. The significant positive relationship between lexical sophistication and lexical diversity was evident in all three task types.

Transitioning smoothly from traditional learning of language to independent learning and consequently, moving from teacher-assessment to self-assessment faces teachers with a dilemma of deciding on learners’ final improvement. To assist to eliminate this dilemma and to compare learners’ self-assessment of reading comprehension skills with those of teacher assessment, the present study was set out. To this end, 190 B.S. Iranian engineering students were selected based on intact classes. The participants’ proficiency was determined by the Oxford Quick Placement Test. Prior to the instruction, the participants’ ability to use two reading skills, i.e. scanning and skimming was assessed by their instructor and by themselves through using a Likert Scale questionnaire. After instructing each skill, the participants received post-tests, both self-assessment and teacher assessment. Following the post-self-assessment, the participants answered an open-ended questionnaire to reflect on their assessment. To analyze the data and understand the differences and correlations between the two types of assessments, SPSS was performed. Intriguingly, the results from self- and teacher-assessment were pro-self-assessment. Besides, the outcomes of the open-ended questionnaire indicated that it is time to trust learners and allow them to assess their own learning and decide on their learning process.