The Interpersonal Reactivity Index (IRI; Davis, 1980) is a commonly used self-report instrument designed to assess empathic tendencies. The IRI consists of four separate subscales: Perspective Taking (PT), Fantasy (FS), Empathic Concern (EC), and Personal Distress (PD). The objective of this study was to examine the psychometric properties of a Dutch version of the IRI. The IRI was administered to a Dutch sample of 651 normal functioning adults. The factor structure of the IRI was examined by using confirmatory factor analysis (CFA). The results of the CFA revealed that there is room for improvement and modification of the original theoretical model. The validity of the IRI was tested using internal criteria (i.e., scale intercorrelations) and external criteria (i.e., correlations with subscales of the EQ-i (Bar-On, 1997), the NEO-FFI (Hoekstra, Ormel, & De Fruyt, 1996), Mach-IV (Van Kenhove, Vermeir, & Verniers, 2001), Rosenberg Self-esteem Scale (Rosenberg, 1965), and the WAIS-III (Wechsler, 2000)). Overall, the internal consistency, construct validity, and factor structure of scores from the Dutch version of the IRI suggest that it is a useful instrument to measure people's self-reported empathic tendencies.

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Overall, siblings of children with HFA are not more susceptible to adaptation problems than siblings of children without a disorder. Implications for practice and further research are discussed.

The goal of this investigation was to identify microlevel processes in the support provider that may foster or inhibit the provision of spousal support. Specifically, the authors focused on (a) how emotional similarity between the support provider and support seeker and (b) how empathic accuracy of the support provider relate to support provision in marriage. In a laboratory experiment, 30 couples were randomly assigned to 1 of 2 conditions (support provider: man vs. woman) of a factorial design. The couples provided questionnaire data and participated in a social support interaction designed to assess behaviors when offering and soliciting social support. A video-review task was used to assess emotional similarity and empathic accuracy during the support interaction. As expected, greater similarity between the support provider's and support seeker's emotional responses, as well as more accurate insights into the support-seeking spouse's thoughts and feelings were found to be predictive of more skilful support (i.e., higher levels of emotional and instrumental support and lower levels of negative types of support).

Infrequent count data in psychological research are commonly modelled using zero-inflated Poisson regression. This model can be viewed as a latent mixture of an "always-zero" component and a Poisson component. Hurdle models are an alternative class of two-component models that are seldom used in psychological research, but clearly separate the zero counts and the non-zero counts by using a left-truncated count model for the latter. In this tutorial we revisit both classes of models, and discuss model comparisons and the interpretation of their parameters. As illustrated with an example from relational psychology, both types of models can easily be fitted using the R-package pscl.