Nearly half of U.S. parents use physical punishment for child discipline. Although some studies relate physical punishment and later dysfunction, others suggest that its effects depend on the context in which it is used. The authors analyzed data from the Commonwealth Fund Survey of Parents With Young Children, a national sample of 2,017 parents with children younger than 3. Parents reported th...

abstract The notion of invariant subspaces is useful in a number of theoretical and practical applications. In this paper we give an elementary treatment of invariant subspaces that stresses their connection with simple eigenvalues and their eigenvectors.

In this experimental study we analyse three collective and one individual punishment rule in a public good setting. We show that under all punishment rules cooperation is stronger and more sustainable than reported from settings without punishment. Moreover, we present evidence and explanations for differences between the rules concerning punishment intensity, contribution and profit levels, as...

Punishment of defectors and cooperators is prevalent when their behaviour deviates from the social norm. Why atypical behaviour is more likely to be punished than typical behaviour remains unclear. One possible proximate explanation is that individuals simply dislike norm violators. However, an alternative possibility exists: individuals may be more likely to punish atypical behaviour, because ...

1 Punishing group members who parasitize their own group’s 2 resources is an almost universal human behavior, as evidenced by 3 multiple cross-cultural and theoretical studies. Recently, researchers in 4 social and behavioral sciences have identified a puzzling phenomenon 5 called “antisocial punishment”: some people are willing to pay a cost to 6 “punish” those who act in ways that benefit the...

This paper examines, theoretically and empirically, the determinants of collective success in the maintenance of infrastructure projects. The empirical analysis employs primary data collected by the author on 132 community-maintained infrastructure projects in Northern Pakistan. Determinants are grouped into community-specific and project-specific factors, the latter identified using community ...

In the electricity market, it is quite common that market participants make “selfish” strategies to harvest maximum profits for themselves, which may cause social benefit loss and impair sustainability of in long term. Regarding this issue, we will study how profit can be improved through strategic demand response management. Specifically, explore two interaction mechanisms market: Nash game St...

Punishment of defectors and cooperators is prevalent when their behaviour deviates from the social norm. Why atypical behaviour is more likely to be punished than typical behaviour remains unclear. One possible proximate explanation is that individuals simply dislike norm violators. However, an alternative possibility exists: individuals may be more likely to punish atypical behaviour, because ...

Many people voluntarily incur costs to punish violations of social norms. Evolutionary models and empirical evidence indicate that such altruistic punishment has been a decisive force in the evolution of human cooperation. We used H2 15O positron emission tomography to examine the neural basis for altruistic punishment of defectors in an economic exchange. Subjects could punish defection either...