Circadian activity disruption is apparent in bipolar patients even when not acutely ill. This finding is not associated with the presence of sleep disturbance. Should such patterns be replicated interventions to address both circadian instability and individual attributions for the effects of such instability are likely to be relevant to successful psychological interventions.

A familial high-risk strategy for studying the role of psychological factors in BD is feasible and informative. This pilot study indicates that abnormal coping styles, instability of self-esteem and dysregulation of sleep may be early markers of bipolar illness. However, current findings need to be explored further in longitudinal studies to clarify which potential markers are truly predictive of BD.

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