Pembinaan dan Penentusahan Instrumen Kemahiran Proses Sains Untuk Sekolah Menengah

Abstract

This study aims to develop a valid and reliable multiple-choice test referred to as Test of Basic and Integrated Process Skills (T-BIPS) for secondary schools to measure the acquisition of a full range of 12 science process skills (SPS), namely 7 basic SPS and 5 integrated SPS. This study involves two phases. Phase one entails the generation of test items according to a set of item objectives, and the establishment of the content and face validities as well as response objectivity in a qualitative manner through the use of panel experts. Phase two involves validating the psychometric properties of the instrument using field testing data from 104 Form 4 students of top, average and bottom sets in urban and rural schools. The final set of T-BIPS consists of 60 items: 28 items for basic SPS (with the KR-20 reliability of 0.86) and 32 items for integrated SPS (with the KR-20 reliability of 0.89). The mean item difficulty index is 0.60, ranging between 0.37 and 0.75, while the mean item discrimination index is 0.52, ranging between 0.20 and 0.77. The results of item analysis indicate that T-BIPS with the appropriate psychometric characteristics is an acceptable, valid and reliable test to measure the acquisition of science process skills.