Attitudes and attitude measurement are critical components of teaching and learning and the instructional developer should collect as much relevant data about that process as possible. It is important for instructional developers to study the attitudes of learners in order to demonstrate attitude/achievement relationships, promote attitudinal position, reduce attitudinal influence, and to assess the impact of specific instruction. Attitude measurement should be valid, reliable, replicable, and fairly simple to administer, explain, and understand. Categories for collecting attitude information include self-reports, reports of others, sociometric procedures, and records. To insure effective attitude measurement, one must identify the construct to be measured and find an instrument that will measure the relevant construct. If no existing measure is available, the instructional developer will need to construct his/her own test, recognizing the critical importance of reliability and validity of information. A pilot study should be conducted in order to revise tests for actual use. When testing is completed, resulting data must be summarized, analyzed, and displayed for the consumer. A bibliography and examples of the measurement process are included. (CWM)