The death of a spouse is an extremely stressful life event that consequently causes a large drop in life satisfaction. Reactivity to the loss, however, varies markedly, a phenomenon that is currently not well understood. Because lack of controllability essentially contributes to the stressful...

Individuals are expected to mature with increasing age, but it is not yet fully understood which factors contribute to this maturation process. Using data of a representative sample of Germans (N = 14,718) who gave information about their Big Five personality traits twice over a period of 4...

We study three budget-neutral reforms of the German tax and transfer system designed to improve work incentives for people with low incomes: a feasible flat tax reform that provides a basic income which is equal to the current level of the means tested unemployment benefit, and two alternative...

Using cross-sectional and longitudinal data from a national sample spanning the adult lifespan, age differences in anger and sadness were explored. The cross-sectional and longitudinal findings consistently suggest that the frequency of anger increases during young adulthood, but then shows a...

Perceived control is an important variable for various demands involved in successful aging. However, perceived control is not set in stone, but rather changes throughout the life course. The aim of this study was to identify cross-sectional age differences and longitudinal mean-level changes as...

Does personality change across the entire life course, and are those changes due to intrinsic maturation or major life experiences? This longitudinal study investigated changes in the mean levels and rank order of the Big Five personality traits in a heterogeneous sample of 14,718 Germans across...

I -- E-Business — Quo Vadis? Analyses and Perspectives -- Geschäftsmodelle — ein Modebegriff auf der Waagschale -- Kundenbindungsmanagement bei Internet-Geschäftsmodellen — eine empirische Analyse -- II -- E-Strategie am Beispiel der Deutschen Bank — ein Bericht aus der Praxis --...

E-Technologien revolutionieren die Geschäftsprozesse im Management. Sie reduzieren Transaktionskosten in einzelnen Geschäftsprozessen wie Vertrieb, Entwicklung, Produktion und Logistik. Transparenz und Geschwindigkeit werden zum Erfolgsfaktor für Geschäftsideen, die E-Technologien als...