This study explored predictors of credit card debt and foreclosure rates in the states of the USA, based on the average personality scores of the residents of the states obtained from an Internet questionnaire completed by 619 397 residents (Rentfrow <italic>et al.,</italic> 2008). It was found that states whose...

Cloninger (1992) applied the portfolio approach to criminal behaviour and illustrated the deterrent effect of capital punishment by use of data from 1983-1988 across the states of America and the District of Columbia. This comment suggests two possible flaws in Cloninger's analyses, which, if...

Time-series analyses were carried out to explore the importance of sociological and economic variables in accounting for the suicide rate in the U.S.A. and in Taiwan for 1952-1984. Sociological variables (divorce and female labor force participation) played similar roles in the multiple...