A 2 (good vs. bad mood) X 2 (important vs. unimportant) X 2 (success v
s. failure) experimental design was used to investigate whether import
ance could moderate mood effects on students' performance attributions
. Attributions were analyzed in terms of their underlying dimensions (
locus, stability, controllability) as specified by Weiner (1985). Unde
rgraduate business students (31 men, 49 women) were randomly assigned
to 1 of the 8 experimental conditions. Analysis revealed a significant
3-way interaction of mood, importance, and performance outcome (p < .
01). Outcome importance significantly reduced mood biases only in perc
eptions of the primary dimension of locus. Perceptions of causal stabi
lity reflected a mood bias: Students in a good mood viewed success as
more stable than failure regardless of outcome importance. Perceptions
of causal controllability were unaffected by students' mood state or
outcome importance, perhaps reflecting a basic need to view events as
controllable.