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Poor reported sleep quality predicts low positive affect in daily life among healthy and mood‐disordered persons
Author(s) -
BOWER BETHANNE,
BYLSMA LAUREN M.,
MORRIS BETHANY H.,
ROTTENBERG JONATHAN
Publication year - 2010
Publication title -
journal of sleep research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 117
eISSN - 1365-2869
pISSN - 0962-1105
DOI - 10.1111/j.1365-2869.2009.00816.x
Subject(s) - pittsburgh sleep quality index , mood , ambulatory , affect (linguistics) , sleep (system call) , anxiety , depression (economics) , sleep disorder , psychology , sleep quality , quality of life (healthcare) , clinical psychology , medicine , psychiatry , insomnia , macroeconomics , communication , computer science , economics , psychotherapist , operating system
Summary Sleep disturbance is a core symptom of mood disorders. However, surprisingly little is known about the relationship between sleep quality and ambulatory daily mood, especially in mood‐disordered populations. We assessed ambulatory positive affect (PA) and negative affect (NA) 10 times daily for three consecutive days with the computerized experience sampling method among persons with major depression ( n = 35), minor depression ( n = 25) and healthy controls ( n = 36). Sleep quality was assessed with the Pittsburgh Sleep Quality Index (PSQI). Poorer sleep quality predicted lower ambulatory PA, even after accounting for the effects of diagnostic group and self‐reported anxiety. Conversely, sleep quality did not predict ambulatory NA once diagnostic group was accounted for. Analyzes of specific PSQI component scores indicated that poor subjective sleep quality and self‐reported daytime dysfunction were the sleep components most strongly tied to reports of low ambulatory PA. Impaired sleep quality may be responsible for reduced pleasurable experience in everyday life.