Previous work has shown that positive mood may facilitate creative pro
blem solving. However, studies have also shown positive mood may be de
trimental to creative thinking under conditions favoring an optimizing
strategy for solution. If is argued herein that the opposite effect i
s observed under conditions promoting loose processing and satisficing
problem-solving strategies. The effects of positive and negative mood
on divergent-thinking performance were examined in a quasi-experiment
al design. The sample comprised 188 arts and psychology students. Mood
was measured with an adjective checklist prior to task performance. R
eal-life divergent-thinking casks scored for fluency were used as the
dependent variables. Results showed natural positive mood to facilitat
e significantly task performance and negative mood to inhibit it. Ther
e was no effect of arousal. The results suggest that persons in elevat
ed moods may prefer satisficing strategies, which would lead to a high
er number of proposed solutions. Persons in a negative mood may choose
optimizing strategies and be more concerned with the quality of their
ideas, which is detrimental to performance on this kind of task.