To assess the relationship between diagnosis and emotional evaluation, mean valence and arousal
ratings of the IAPS pictures were analyzed in a mixed model analysis of variance (ANOVA),
with group (bipolar vs. control) and affective valence (pleasant vs. neutral vs. unpleasant) as
within subjects factors. For all the analyses, Fisher’s least significant difference (LSD) post hoc
tests were carried out for all significant effects and the level of significance was set at p < 0.05.