title: Can state and trait variables be disentangled? A methodological framework for psychiatric disorders.
abstract: The goal of this study is to propose conceptual and operational definitions of "state" and "trait", and a methodological approach to document empirically the state and trait aspects of a characteristic. An example using real data related to rapid eye movement latency for patients with major depressive disorder is presented to model the application of this method.
authors.affiliation: Dept. of Psychiatry and Behavioral Sciences, Stanford University, CA.
authors.forename: H C
authors.initials: HC
authors.lastname: Kraemer
authors.forename: C M
authors.initials: CM
authors.lastname: Gullion
authors.forename: A J
authors.initials: AJ
authors.lastname: Rush
authors.forename: E
authors.initials: E
authors.lastname: Frank
authors.forename: D J
authors.initials: DJ
authors.lastname: Kupfer
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000523:psychology*; D008875:Middle Aged; D012015:Reference Standards; D015203:Reproducibility of Results; D012107:Research Design