A design and assessment of computer assisted instruction (CAI) on computed tomography

Abstract

There is a lack of media for teaching Computed Tomography. Computer Assisted Instruction in (CAI) in Computed Tomography may solve this problem. The purpose of this research was to compare three different types of CAI, the first with No Sound, the second with Sound without Answer and the third with Sound with Answer by evaluating learning achievement. The sample group were 70 first and second year Radiological Technology Students, Mahidol University. They were randomly separated into three groups. All three courses in CAI had the same conceptual basis but the instructional methods were different. Data collection methods used included pre-test and post-test together with questionnaire and an attitude survey. Data were analyzed by using percentage, mean, standard deviation and t-test. The results of this study indicated that: 1. In all three courses the benchmark criterion of an 80% score was achieved. This means that all three methods meet the standards for Computed Tomography instruction. 2. There was no significant difference found between the three kinds of Computer Assisted Instruction (CAI) in terms of efficiency. 3. The study showed a significant gain each group in pre- test and post- test scores. Computer Assisted Instruction (CAI) with No Sound increased from 28.26 to 82.02, Sound without Answer 29.77 to 82.69, and Sound with Answer 40.02 to 80.97. These results indicate that Computer Assisted Instruction (CAI) is an efficient way of teaching Computed Tomography but the results do not distinguish a best method of the three.