Today, Germany's citizens are happier on average than at any other point in time since reunification. Even though more than 20 years have passed, the average level of happiness in eastern Germany is still significantly lower than that in western Germany. This is demonstrated by the most recent...

Delay of gratification (DoG) and delay discounting (DD) are behavioral measures of self-regulation and impulsivity. Whereas DoG refers to the postponement of gratification, DD involves the devaluation of a reward over time. Previous studies have demonstrated associations between paternal...