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)

The effects of father absence on educational achievement and intellectual development of 6- to 11-year-old children were investigated by employing a nationally representative sample of 5,493 father-present and 616 father-absent children from the Health Examination Survey of the National Center for Health Statistics. (Author/RH)

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…

Thirty-two 4-year-olds made same and different judgments about pairs of stimuli requiring detailed comparison. Two treatment conditions were employed: a judgment-only condition and a justification condition in which children explained the reasons for their judgments. (Author/JMB)

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.…

A set of boxes with incongruous animal pictures and a set of plastic Bristle Blocks were presented to 20 preschool children and 20 college students to investigate or play with as they wished. The time spent in investigative exploration and play was recorded over three 10-minute sessions on separate days. (Author/JMB)

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…

Critiques previous research concerning differences in voice onset time discrimination between Spanish and English infants and conclusions about the effect of early linguistic experience on speech perception. (RMH)

Argues that Aslin and Pisoni's criticisms are basically unwarranted on both methodological and conceptual grounds. (RMH)

Paired English-learning and Spanish-learning infants were tested for perception of two synthetic speech contrasts differing in voice onset time. Results indicate that Spanish-learning infants discriminated both English and Spanish contrasts, while English-learning infants appeared to have discriminated English contrasts only. (JMB)

Observational data collected in the homes of 17 abuse, 17 neglect, and 19 control families indicated that abusive and neglectful parents demonstrated lower rates of interaction overall and were more likely to emphasize the negative in their relationships with their children. (JMB)