Objective: The purpose of this study was to explore how the functional impact of Parkinson's disease affects participation and to evaluate whether positive psychological capital (PsyCap) mediates the relationship within the context of the World Health Organization International Classification of Functioning, Disability, and Health Model. Method:…

Taxometric analyses have proven helpful for distinguishing categorical and dimensional data. Many taxometric procedures require at least 3 variables for analysis. What if a construct is defined by only 2 conceptually nonredundant characteristics or a data set contains only 2 empirically nonredundant variables? In Study 1, we performed extensive…

Attempted empirical validation of the fixated-regressed typology used in child sexual abuse literature. Analysis of 136 consecutive cases of convicted child molesters over a 2-year period revealed that the victim's and offender's family relatedness and the offender's prior non-sex-criminal record significantly predicted an offender's degree of…

Systematically assessed replicability and generalizability of a multidimensional alcoholism typological system in 399 inpatient, outpatient, and non-treatment-seeking cocaine abusers. Two different procedures supported the construct, concurrent, and predictive validity of the Type A-Type B distinction in cocaine abusers. Multidimensional…