Discrepancies between ideal and actual affect in schizophrenia: Implications for understanding negative symptoms.

Anhedonia is a core symptom of schizophrenia (SZ). However, psychological mechanisms underlying anhedonia are unclear, making it difficult to develop personalized psychosocial treatments. The current study explored the novel hypothesis that anhedonia is driven by discrepancies between ideal and actual affect (i.e., how positive or negative someone wants to feel compared to how they do feel), which impact the frequency of recreational, goal-directed, and social behaviors. Participants included 32 outpatients with SZ and 29 healthy controls (CN) who completed the Affect Valuation Index and measures of negative symptom severity. Results indicated that individuals with SZ displayed greater positive and negative emotion discrepancy scores than CN, suggesting that they strongly desire to feel more positive and less negative in the future than they actually do. Additionally, greater ideal relative to actual positive and negative affect was associated with greater severity of anhedonia, avolition, and asociality. The discrepancy between ideal and actual affective states may be demotivating, leading individuals with SZ to develop dysfunctional beliefs after repeated experiences of failing to achieve their desired emotional goal state. These findings suggest that ideal affect may be a novel psychological mechanism underlying negative symptoms that could be targeted in psychosocial treatments.