In a dark time: Development, validation, and correlates of the Durham hypnagogic and hypnopompic hallucinations questionnaire
January 1, 2009 Simon R. Jones, C. Fernyhough, D. Meads
Abstract One factor limiting research involving hypnagogic and hypnopompic (H&H) hallucinations is the lack of a brief, valid and reliable self-report measure of such experiences. The present paper reports on the development of the Durham Hypnagogic and Hypnopompic Hallucinations Questionnaire (DHQ), which consists of three unidimensional subscales assessing the presence of auditory, visual,...