Program evaluations can serve a number of functions. From a marketing standpoint, one important function is the generation of information upon which a program or "product" can be modified. A case study approach is used to show two methods for gathering information for the purposes of program modification. Both are relatively easy to use and involve minimum costs.
Gitelson, Richard J.
"Program Modification Through Program Evaluation,"
Visions in Leisure and Business: Vol. 3
, Article 6.
Available at: https://scholarworks.bgsu.edu/visions/vol3/iss2/6