Insomniacs' attributions. psychometric properties of the Dysfunctional Beliefs and Attitudes about Sleep Scale and the Sleep Disturbance Questionnaire.
OBJECTIVE: Mental overactivity has been widely implicated in the development and maintenance of insomnia, making the accurate and valid measurement of cognitive variables of some importance. The purpose of this study was to investigate the psychometric properties of two existing attributional scales. METHODS: Data are presented from 178 clinic attending insomniacs who completed the Dysfunctional Beliefs and Attitudes about Sleep Scale (DBAS) and the Sleep Disturbance Questionnaire (SDQ). Stan...Expand abstract
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