Brain imaging studies suggest that truth telling constitutes the default of the human brain and that lying involves intentional suppression of the predominant truth response. By manipulating the truth proportion in the Sheffield lie test, we investigated whether the dominance of the truth response is malleable. Results showed that frequent truth telling made lying more difficult, and that frequent lying made lying easier. These results implicate that the accuracy of lie detection tests may be improved by increasing the dominance of (...) the truth response and that habitual lying makes the lie response more dominant. (shrink)

Sociopaths are “outstanding” members of society in two senses: politically, they draw our attention because of the inordinate amount of crime they commit, and psychologically, they hold our fascination because most ofus cannot fathom the cold, detached way they repeatedly harm and manipulate others. Proximate explanations from behavior genetics, child development, personality theory, learning theory, and social psychology describe a complex interaction of genetic and physiological risk factors with demographic and micro environmental variables that predispose a portion of the population (...) to chronic antisocial behavior. More recent, evolutionary and game theoretic models have tried to present an ultimate explanation of sociopathy as the expression of a frequency-dependent life strategy which is selected, in dynamic equilibrium, in response to certain varying environmental circumstances. This paper tries to integrate the proximate, developmental models with the ultimate, evolutionary ones, suggesting that two developmentally different etiologies of sociopathy emerge from two different evolutionary mechanisms. Social strategies for minimizing the incidence of sociopathic behavior in modern society should consider the two different etiologies and the factors that contribute to them. (shrink)

Jones (1990) described ten workplace behaviors of a dubious ethical nature and determined that the hierarchical position adopted by respondents influenced the perceived acceptability of these behaviors. This measure seems promising, and therefore the purpose of this investigation is two-fold: (1) to explore further the psychometric properties of these ten items; and (2) to examine the role of individual difference variables as correlates of perceived acceptability. In two samples of working people, the Jones items were found to be internally consistent, (...) not obviously subject to range restriction, modestly related to social desirability, largely orthogonal to age and managerial status, but clearly linked with Machiavellianism. The nature of the linkage between perceived acceptability and both sex and the Protestant work ethic differed across the two studies, which underscores the need for future research. Two additional variables worth investigating in such research may be locus of control and equity sensitivity. (shrink)