This manual presents a system for categorizing stated esthetic responses to paintings. It is primarily a training manual for coders, but it may also be used for teaching reflective thinking skills and for evaluating programs of art education. The coding system contains 33 subdivisions of esthetic responses under three major categories: Cue Attendance, Hypothesis Generation, and Evaluative Judgmental. The categories are defined with reference to reproductions of three paintings and are followed by exercise sheets and answer sheets on which the appropriate responses are explained. An appendix explains how to compute an individual's response uncertainty score based on his responses to these paintings or other works of art. (Author)