FACTOR ANALYTIC STUDIES OF THE MOOD ADJECTIVE CHECKLIST.

A mood adjective check list MACL was administered to approximately 450 college men at the beginning and end of six weekly one-hour experimental sessions, during which a motion picture film or other treatment was used to induce different mood states. The check list consisted of 130 words carefully chosen to represent four hypotheses about the dimensions of mood. Five different sets of results were factor analyzed and a total of 12 factors were identified, eight of which appeared in at least four of the five rotated solutions. Each factor is discussed as a basis for further hypotheses about the dimensions of mood. To determine whether or not responses to the adjectives of any single factor covary with different experimental treatments, pre-post difference scores were computed for each of the experimental sessions for the 49 words which best define the 12 factors. Of the 294 difference scores only 17 show inconsistency with other scores for variables in the same cluster.