The selection of acts from the stream of infant behavior is examined. Adults (140 mothers, fathers, and other men and women) viewed videotapes of 9-, 15-, and 21-month-old infants. One half noted meaningful acts; the other half noted intentionally communicative acts. Parents selected more meaningful acts than nonparents and agreed more about…

Reports on four experiments on pattern perception in four-month-old infants. The first experiment examined preference for patterns varying in structure; the second examined encoding patterns from different subset sizes; and the last two experiments examined changes in the size, position, and orientation of the habituation pattern. (HOD)

Quantifies behavioral periodicities or cycles during face-to-face interaction between three- and five-month-old term and preterm infants and their mothers. Compares the temporal organization of social interaction between term and preterm infants. Spectral and cross-spectral techniques showed the existence of periodicities. Differences were found…

Tests three previously untested hypotheses central to the theory of Brazelton and colleagues about the sequential structure of mother-infant face-to-face interaction. Results show that with some revision the hypotheses describe the structure of mother-infant face-to-face interaction from three to nine months of age. (Author/RH)

Ability of 26 newborns to imitate facial expressions was examined. When infants observed emotional facial expressions, they did not show imitative matching of the modeled expressions. However, when tongue protrusion was modeled, infants did produce the modeled gesture. (PCB)

Reports two experiments in which eight patients with organic memory disorders exhibited a pattern of search behavior that resembled mnemonmic precedence--the ability to retrieve an object at an initial location, but not at a new location. (HOD)

Two variants of the habituation paradigm were used to investigate fine orientation discrimination and shape constancy in 34 young infants. Results demonstrate that conditions determine whether young infants show sensitivity to relatively fine variations in pattern orientation or give evidence of shape constancy with the same patterns. (HOD)

Investigates whether, and under what conditions, mothers of irritable infants, in contrast to mothers of less irritable babies, become less responsive/sensitive over time. (HOD)

Considers three questions: Do mothers of siblings show consistency in behavior to their children when observed with each child at 24 months? What stability is there in behavior of mothers toward their children from 12 to 24 months? Are sibling status or genetic factors related to differences between mothers in relative consistency or inconsistency…

Investigates factors associated with outcomes in attachment relationships between 30 well-educated, full-time working mothers and their 18-month-old firstborn sons. Suggests maternal employment effects on mother-son attachment are mediated primarily by a woman's affective state, which becomes manifested in her style of caregiving and child-care…

Using the Ainsworth Strange Situation Procedure, a study examined the interrelations between dimensions of emotion and social interactive behaviors to explore the regulatory role of each in mother-infant interaction and how these roles may change in the second year. (HOD)

Examines whether vocal exchanges between preverbal infants and their mothers show characteristics similar to those found to be typical of conversational exchanges between competent adult speakers. (HOD)

This case study of a toddler with autism whose parents had videotaped her development from birth showed that the child's behavior and development were essentially normal for the first year but that she then became withdrawn in only a few months. It is suggested that early communicative screening tests might have identified the child's earliest…

This investigation addresses problems of defining verbal imitation, and suggests solutions by analyzing verbal interactions between two children and their mothers. Children were between 18 and 35 months old, with a mean length of utterance between 1.4 and 4.2 morphemes. Analyses focus upon the uses these children made of maternal models; 10…

Tests the ability of 43 children, ranging in age from 20 months to 40 months, to discriminate between pictures of boys and girls and male and female adults. Compares children who passed this gender-task with those who failed it on three behaviors most often categorized as sex-typed: toy choice, aggression, and peer playmate selection. (HOD)