This paper presents a psychometric analysis of the criterion problem in neo-Piagetian concept development research. The evidence shows that false negative and false positive criterion errors have the same effect on the null hypothesis so that the criterion with the lowest error rate should be utilized. (Author/JMB)

Findings indicate that high cortisol levels and interfering substances in formula and breast milk could contaminate salivary cortisol measurements in young infants. To insure accurate results, appropriate controls should be taken for salivary cortisol measurements of young infants. (RH)

Using the multitrait-multimethod matrix design, this study investigated the convergent and discriminant validity of three selected measures of aggression in second, third, and fourth grade children based on three methods of data collection: teacher ratings, peer ratings, and self report. (BD)

Examined relations between reactivity (peak response) and regulation (response dampening) in 6-month-olds' cortisol and behavioral responses to inoculation. Found that reactivity and regulation were unrelated for both cortisol and behavior, suggesting both measures are needed to characterize more accurately infant response to stress. Found…

This article reviews the literature on infants' reactions to strangers, focusing on issues of assessment, reliability, and stability. (JMB)

A review of the literature dealing with the effects of stimulative intervention on premature infants. (BRT)

Paper presented at the meeting of the American Psychological Association, Miami, Florida, September, 1970. (RY)

Addresses the criticisms of Diana Baumrind's review of his research on sex differences in moral reasoning development. Discusses issues such as the nature of moral development, the focus on adulthood, the choice of statistics, the effect of differing sample sizes and scoring systems, and the role of sexual experiences in explaining variability in…

It was concluded that the scaled preference values have high face validity and that they suggest the need for reexamination of some previous experimental results. (Author)

Challenges the view that the cognitive-developmental level of preschool children prevents them from attaining gender constancy. Reviews shortcomings in procedures previously used to assess gender constancy. Reports on a study which uses a new measure of gender constancy and a new test of children's genital knowledge. (PCB)

Assessed the possible confounding of preadolescents' temperament as a predictor of psychological adjustment, using confirmatory factor analysis (CFA) and expert ratings. CFAs demonstrated that temperament could be reliably measured after eliminating overlapping items. Negative emotionality and impulsivity were negatively related to symptom…