Sex and Age Differences in the Risk Threshold for Delinquency

This study examines sex differences in the risk threshold for adolescent delinquency. Analyses were based on longitudinal data from the Pittsburgh Youth Study (n?=?503) and the Pittsburgh Girls Study (n?=?856). The study identified risk factors, promotive factors, and accumulated levels of risks as predictors of delinquency and nondelinquency, respectively. The risk thresholds for boys and girls were established at two developmental stages (late childhood: ages 10–12 years, and adolescence: ages 13–16 years) and compared between boys and girls. Sex similarities as well as differences existed in risk and promotive factors for delinquency. ROC analyses revealed only small sex differences in delinquency thresholds, that varied by age. Accumulative risk level had a linear relationship with boys’ delinquency and a quadratic relationship with girls’ delinquency, indicating stronger effects for girls at higher levels of risk.     

Glymour and Quine on Theoretical Equivalence

Glymour (1970, 1977, 1980) and Quine (1975) propose two different formal criteria for theoretical equivalence. In this paper we examine the relationships between these criteria.     

Investigation concerning the possibility of rational ethics

Ethical behavior such as self‐sacrifice and striving for juistice—the natural striving for a general prosperity for humans—is not mainly learned but is carried by a natural altruism from one generation to the next. It is based on group (rather than individual) altruism which has concentrated on protection of the aged (as preservers of knowledge) and the young (as preservers of future generations).

It is proposed that the strongest possible nature form of community is the “amorisation community"—in effect, one in which love produces more love. A case is presented for the creation of a world scientific and cultural transformation based on the ethics of the “amorisation community.”