Four groups of 18 adult listeners rated the tape-recorded cries of low- and high-risk infants on four Likert-type scale items. Results indicate that within-group methods of cry presentation accentuate the perceptual distance among cry types and may actually create many reliable differences that would not be found in between-group comparisons.…

The stability of standard score and probability method sociometric group assignments was examined over a two-year period with an initial group of 334 fifth graders. Popular, neglected, and controversial groups evidenced low stability of group members over intervals of approximately 1, 6, 12, 18, and 24 months. (Author/RH)

Contrasts measurements and conceptualizations of the environment employed by environmentally oriented behavioral scientists with those developed by behavior geneticists. For the environmentalist, the environment is multidimensional, dynamic, and transactional, as well as mediated by the individual. By contrast, the behavior geneticist's…

Aimed to determine to what degree newborns' auditory brainstem evoked responses (ABRs) predict delayed or impaired development during the first year. When 93 infants' ABRs were evaluated at three, six, and nine months, newborn ABR was moderately sensitive for detecting hearing impairment and more sensitive than other indicators in detecting…

Study of children aged 21 to 31 months tentatively concludes: (1)behavioral tendency to be inhibited or uninhibited with unfamiliar people or during unfamiliar events is moderately stable across time and context; and (2)moderately negative relationship exists between behavioral inhibition and heart rate variability, and positive relationship…

Investigates, among delinquent and nondelinquent subjects ages 10 to 11 and 14 to 15 years, differences exhibited on moral reasoning tasks, social problem solving/metacognition, effects of clues on performance on a social problem-solving task, effects of age, and the interaction of age and delinquency. (Author/RH)

Results indicate that the pattern of acquisition of noun plurals in English is comparable for both children having English as their first language and those acquiring English as a second language. (Authors)

Study compares the effects of different conditions which imply reversibility on children's judgments of conservation of quantity. (Authors)

Discusses some general-causal assumptions of current neo-Piagetian research and compares them with those of French European developmentalists with regard to individual differences, developmental stages, and methodology. Discusses the developmental unfolding of mental attentional mechanisms. Highlights developmental theory problems for the…

Notes that commentators unanimously support Rothbaum et al.'s general orientation to culture and development and their developmental pathways. Views commentators' suggestions as relating to trade-offs: between theories that highlight generalization or exceptions; between methods that rely on one-, two-, or multiculture studies; and between values…

Provides background information and a practical guide for including demographic information in developmental research. Describes historic demographic trends reflecting ways family and economic environments have been and continue to be transformed; presents demographic statistics to provide basis for comparison of research populations; and offers…

Uses structural equation modeling to combine traditional ideas from repeated-measures ANOVA with some traditional ideas from longitudinal factor analysis. The model describes a latent growth curve model that permits the estimation of parameters representing individual and group dynamics. (Author/RH)