Abstract:
The purpose of this study was to compare test reliability and validity of the multiplechoice mathematies achievement tests with three different method of construction distractors ; namely, those constructed by a teacher, by a group of answering a completiontest. Three multiple choice Mathematies achievement tests which each of them had the same questions item by item, were used in this study. The differences of these tests were the ways in constructing distractors. The subjects were 94 Mathayomsuksa 5 students who studied Science Mathematics program in the second semester of academic year 1993 fromDemonstration school, Ramkhamhaeng University.