Reactivity of affect and self-esteem during remission in bipolar affective disorder: an experimental investigation.

Background: Bipolar affective disorder (BPAD) is characterised by a lifelong vulnerability to develop episodes of depressed or elevated mood in response to stressful life events involving achievement or failure. We hypothesised that this latent vulnerability can manifest as reactivity of affect and self-esteem to experimentally induced experiences of success and failure and is shaped by history of childhood adversity.

Methods: Twenty-four people with remitted BPAD and twenty-four healthy controls underwent anagram-solving tasks designed to generate experiences of success and failure in two separate sessions. Positive and negative affect and implicit and explicit self-esteem were measured before and after each task. Early adversity was measured by Childhood Trauma Questionnaire.

Results: People with BPAD showed larger reactivity of affect and explicit self-esteem in response to experimental success and failure than did healthy controls. There were no significant differences in reactivity of implicit self-esteem. History of childhood trauma predicted increased affective reactivity to failure but not to success.

Limitations: We used a convenience sample.

Conclusions: The present experimental paradigm reveals reactivity of affect and self-esteem as features of BPAD, which are present even during good remission and thus are accessible as targets of interventions aiming at relapse prevention. Differential associations with childhood adversity indicate aetiological heterogeneity, with reactivity to failure influenced by early trauma and reactivity to success driven by other mechanisms.