This paper focuses on item design considerations faced by instructional designers and evaluators when using computer videodisc delivery systems as a means of assessing learner comprehension and competencies. Media characteristics of various interactive computer/videodisc training systems are briefly discussed as well as reasons for using such systems for testing. Suggestions for test item design at various skill performance levels are offered for use with a single screen interactive computer/videodisc system with a high resolution graphics monitor having overlay capabilities. Test item designs are specified and briefly discussed for the following typical skill performance objectives--to assess the learner's comprehension of a particular part removal and replacement, identify components, discriminate between components, interpret results and equipment readings, specify location or set-up, and assess problem-solving skills involved in troubleshooting. Some related test development topics are reviewed, and suggestions are made for further research. (LMM)