Evidence supports reliability and validity of the GAD-7 as a measure of anxiety in the general population. The normative data provided in this study can be used to compare a subject's GAD-7 score with those determined from a general population reference group.

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The internal structure of the revised Life Orientation Test (LOT-R, German version; M. F. Scheier, C. S. Carver, & M. W. Bridges, 1994) was analyzed in a sample of 46,133 participants who ranged in age from 18 years to 103 years. Confirmatory factor analysis showed that dispositional optimism, as measured by the LOT-R, is bidimensional, consisting of an Optimism and a Pessimism factor. Consistent with previous results, there were small to moderate negative correlations between Optimism and Pessimism, but the strength of the association continuously decreased with age. The relative independence of the 2 dimensions occurred in both genders and across different age groups of patients with different medical disorders.

Zusammenfassung: Für die deutschsprachige Fassung der Rosenberg-Skala zum Selbstwertgefühl von Ferring und Filipp (1996) wird eine Teilrevision vorgeschlagen. Ein Item der bisherigen Skalenversion stellte sich in eigenen Analysen als psychometrisch unzulänglich heraus und weist eine mangelnde inhaltliche Validität auf. Dadurch ist möglicherweise die Vergleichbarkeit mit der Originalversion und mit Adaptationen der Rosenberg-Skala in anderen Sprachen nicht gewährleistet. Die vorgeschlagene Teilrevision der Skala versucht, diese Mängel zu beheben und erweist sich in zwei unabhängigen Untersuchungen als Verbesserung der bisherigen Skala auf Itemebene. Außerdem werden hier erstmals vollständige Kennwerte für alle Skalenitems mitgeteilt.

Prototypes of personality were investigated in two studies. In study I, clusters of Big‐Five‐based prototypes were examined using a general population sample of 1908 German adults. Convergent evidence suggested the appropriateness of a five‐cluster solution, which corresponds to previously identified temperament based prototypes. In study II, the five‐cluster solution was cross‐validated in a sample of 256 prisoners. Moreover, it was shown that a population‐based approach (using discriminant functions derived from study I) was superior over the traditional sample‐based cluster approach (using Ward followed by k‐means). The authors argue that future typological research can be sufficiently grounded on a five‐prototype conception rather than on a three‐prototype conception, and suggest a new and flexible assignment procedure. Copyright © 2006 John Wiley & Sons, Ltd.