Natanan Tungsujarittam. The design of english proficiency test for industrial trades certificate students at Nakhonsawan Technical College. Master's Degree(Applied Linguistics - English for Science and Technology). สถาบันเทคโนโลยีพระจอมเกล้าเจ้าคุณทหารลาดกระบัง. สำนักหอสมุดกลาง. : King Mongkut's Institute of Technology Ladkrabang, 2015.
The design of english proficiency test for industrial trades certificate students at Nakhonsawan Technical College
Abstract:
The purpose of this study was to design the English proficiency test for Industrial Trades Certificate students at Nakhonsawan Technical College. The research instruments were 1) the English proficiency test, 2) the Index of the Item Objective Congruence (IOC), 3) an evaluation form of the quality level of the test, and a questionnaire. The research participants included: 1) two pilot groups, each of which consisted of 30 certificate graduates majoring in Automotive Specification, studying in their first year of the diploma program in the academic year 2012, 2) the subjects who were 87 third-year certificate students majoring in Automotive Specification, studying in the last semester in the academic year 2012 and, 3) 30 employers to explore the workplace needs. The research results revealed that, of all 200 test items, 154 items were congruent with the objectives, with the IOC between 0.5 and 1.00 while 60 items must be revised (46 items with IOC lower than 0.5 and 14 items being incorrect as a writing skill test). The test was evaluated in 3 aspects; i.e., authenticity, interactivity, and practicality, all of which were found at a high level with the average mean (x̄) of 3.75 (S.D. = 0.81), 3.63 (S.D. = 0.38), and 3.87 (S.D. = 0.30), respectively. Moreover, it was found that all the test items were required by the workplaces at a high level with the average mean (x̄) of 4.25 (S.D. = 0.14). The 200 validated English proficiency test items were divided into 2 sets with 100 items each: Set A and Set B. The difficulty level and the discrimination level of the 2 sets were assessed through the two pilot groups. The results indicated that the difficulty levels of the two test sets were moderate (p = 0.49 for Set A and 0.53 for Set B), but the discrimination levels were low (r = 0.137 for Set A and 0.173 for Set B). However, only the reliability of Set B was within acceptable range (KR20=0.664). The results of the test scores showed that most of the subjects failed in the test with an average mean (x̄) of 34.9 (S.D. = 10.91). Only nine students could attain the passing scores of 50 and over