2.2: English Pronunciation. ……………………………………………………..  22

 

2.3: Experiments on English Pronunciation. ……………………………………  29

 

2.4: Morphology and Lexicon. ………………………………………………….. 51

 

2.5: Experiments on Knowledge of Vocabulary. ………………………………..  66

 

2.6: Summary. …………………………………………………………………… 74

 

 

 

Chapter 3: Methodology

 

3.0. Introduction………………………………………………………………….  75

 

3.1. The Pilot Study (*Optional)…………………………………………………  76

 

3.2. The Design of the Study…………………………………………………….   78

 

3.3. Participants or (Subjects)……………………………………………………   79

 

3.4. Materials……………………………………………………………………..   80

 

3.5. Procedure…………………………………………………………………….   81

 

3.6. Methods of Analyzing Data………………………………………………….   82

 

3.7. Summary……………………………………………………………………..   83

 

Chapter 4: Result

 

4.0. Introduction……………………………………………………………………   83

 

4.1. Data Analysis and Findings……………………………………………………   83

 

4.1.1. Descriptive Analysis of the Data…………………………………………….   86

 

4.1.2. Inferential Analysis of the Data………………………………………………  86

 

4.2. Results of Hypothesis Testing………………………………………………….  89

 

4.3. Summary……………………………………………………………………….  90

 

Chapter 5: Discussion

 

 

 

5.0. Introduction……………………………………………………………………   91

 

5.1. General Discussion……………………………………………………………    92

 

5.2. Implications of the Study………………………………………………………   93

 

5.3. Limitations of the Study………………………………………………………..  94

 

5.4. Suggestions for further Research………………………………………………   95

 

5.5. Summary……………………………………………………………………….   95

 

 

 

Reference…………………………………………………………………………….96

 

Appendixes ……………………………………………………………………….. 106

 

 

 

 

 

 

 

 

 

 

List of Tables

 

 

 

Table1. Mean scores gained by treatment groups in the pre-test

 

Table2. Mean scores gained by treatment groups in the pre-test

 

Table3. Mean scores gained by control groups in the post-test

 

Table4. Mean scores gained by treatment groups in the post-test

 

Table5. Descriptive analysis of the pretest (PR) and the posttest (PO) of the control group of the study

 

Table3.1. Descriptive Statistics for the Pilot Study, lexical Knowledge Scores

 

 

 

 

 

 

 

 

 

 

 

 

 

List of Figures

 

 

 

Figure1.1 the Percentage of the Scores over and Under the Mean of the Pre-test

 

Figure2.2 the Percentage of the Scores over and Under the Mean of the Pre-test

 

Figure3.3 the Percentage of the Scores over and Under the Mean of the Pro-test

 

Figure4.4 the Percentage of the Scores over and Under the Mean of the Pro-test

 

Figure3.1. the Percentage of the Scores over and Under the Mean of the Pilot Study

 

Figure3.2. the Diagram of the Design of the Study

 

 

 

 

 

 

 

 

 

  

 

 

 

Abstract

 

The aim of the present study was to investigate the effect of pronunciation forms on improving Iranian EFL learners’ knowledge of vocabulary. To achieve this purpose, fifty participants pre-intermediate language learners were selected based on their scores on a knowledge of vocabulary test and were randomly assigned to two groups. Each group was exposed to as pre-test and post-test. At the end of the experiment, to see whether or not any changes happened regarding their lexical knowledge, a post-test was administrated to two groups. The results suggested that the participants performed differently on the post-test indicating that teaching lexical through rehearsal and pronunciation forms promotes the Iranian EFL learners’ knowledge of vocabulary.

 

Key Words