The present book adds to the broad field of investigations concerning what affects and determines human cooperation. It provides new insights into internal and external factors that influence such decisions. Rather than presenting a closed and universal examination, this book should be seen as...

A number of recent studies show that males may increase their performance by more than females in response to competitive incentives. The literature suggests that such a male competitive advantage may contribute to observed gender gaps in labor force pay and achievement. Understanding which...

Studying competitiveness and risk-taking among Jeopardy! contestants in the US, this paper analyzes whether and how gender differences emerge with age and by gender of opponent. Our samples contain 186 children (aged 10-12), 310 teenagers (aged 13-17), and 299 undergraduate college students. We...