0974 COMMITMENT LANGUAGE DOES NOT PREDICT THERAPY COMPLIANCE IN ADOLESCENTS WITH DELAYED SLEEP-WAKE PHASE DISORDER

Abstract Introduction: Recent evidence indicates that motivation to change sleep patterns in adolescents is low. Our aim was to evaluate components of adolescents’ motivation, and subsequent changes in behaviour in those diagnosed with Delayed Sleep-Wake Phase Disorder (DSWPD). Methods: 31 adolescents diagnosed with DSWPD (age: 15.87 ± 2.3, 32.3%m) underwent 3 individual behavioural therapy sessions involving morning bright light therapy to phase advance sleep patterns. Adolescents wore portable light glasses each morning and were instructed to advance wake-up times by 30-mins daily. Motivation ratings (0=low-10=high) of desire, ability, need and commitment to change sleep patterns were taken at baseline. Sleep diaries were used during therapy, with sequentially earlier wake-up times in 30-min intervals indicating behavioural compliance. Results: Following therapy, clients’ sleep-onset times were significantly advanced, total sleep time increased and sleep latency decreased. Adolescents attended all 3 sessions, with only 2 dropping out. Adolescents indicated strong desire (M=9.1 ± 1.6) and need (M=8.2 ± 1.3), yet moderate ability (M=6.82 ± 1.31) to advance sleep-wake patterns. Verbal commitment to therapy was associated with ability (r=.77, p