We show in a public goods experiment on three continents that conditional cooperation is a universal behavioral regularity. Yet, the number of conditional cooperators and the extent of conditional cooperation are much higher in the U.S.A. than anywhere else. -- conditional cooperation ; public...

A number of researchers point to the anticipation of early death, or a sense of futurelessness, as a contributing factor to youth crime and violence. Young people who perceive a high probability of early death, it is argued, may have little reason to delay gratification for the promise of future...

There is longstanding evidence that children raised by single parents are more likely to perform poorly in school and partake in 'deviant' behaviors such as smoking, sex, substance use and crime at young ages. However, as of yet there is not widespread evidence or agreement as to whether or not...