Change process research had developed some practical tools and concepts which can assist in the determination of essential variables for an evaluation design. The Concerns-Based Adoption Model (CBAM) Project at the Texas Research and Development Center in particular has developed specific measures which can be applied directly: "Levels of Use of the Innovation" measure evaluates to what extent a program is actually being used, while "Innovation Configuration" describes what adaptations, if any, have been made in the program. The need to view any program within a time frame necessary for it to be considered fully installed has also been a valuable contribution from the change process research. The two CBAM measures can also be used to establish what this time period is. Taking into account the three dimensions of time for implementation, levels of use, and description of use, evaluation designs can be far more specific about what they portend to evaluate and can attribute effects of this specifically described program with a greater degree of validity. (Author/PN)