Objective: This study examines how changes in cohabitation or marital status affect Body Mass Index (BMI) over time in a large representative sample. Methods: Participants were 20,950 individuals (50% female; 19 to 100 years), representative of the German population, who provided 81,926...

Behavioral science interventions like incentives, nudges, and boosts are increasingly used in public policy, but their effectiveness remains debated. We conducted a meta-meta-analysis on behavior change interventions across health, finance, and sustainability outcomes. Our analysis covers 838...

The goal of this study was to identify and empirically test variables that indicate how well partners in relationships know each other's food preferences. Participants (n = 2,854) lived in the same household and were part of a large, nationally representative panel study in Germany. Each partner...

Can risk-taking propensity be thought of as a trait that captures individual differences across domains, measures, and time? Studying stability in risk-taking propensities across the lifespan can help to answer such questions by uncovering parallel, or divergent, trajectories across domains and...

Empirical results suggest that individual and age-related differences in risk taking may be task dependent. Such results call into question the power of traditional measures of risk preferences, such as the choice between monetary gambles with described outcomes and probabilities, to fully and...

The impact of parents' education and social position on their children's educational career is very well known for Germany. However, there is little research on the influence of parental income. The costs of longer-lasting school tracks and the financial opportunities of the parents are crucial...

Private paid tutoring is a subject that is not well recognised in education research. By using theories on educational choice one could argue that tutoring promotes inequalities in attaining qualifications. Empirical analyses based on the German Socio Economic Panel Study (SOEP) show that more...