This study examined both differential patterns and the stability of infants' (N = 70) distress reactivity across mother and stranger arm-restraint conditions when infants were 6 and 9 months of age. Reactivity measures included observational variables for the rise, intensity, and duration of infant distress as well as motor activities associated…

Familiarity of the setting, the mother's presence, sex of the stranger, and the distance separating the infant and the stranger were varied to examine the expression of stranger fear in 32 infants from 6 to 11 months of age. (Author/JMB)

Supports the hypothesis that temperamentally fussier 5- to 9-month-old infants are more fearful and less friendly toward strangers than are more easygoing infants of the same age. (MP)

Examined emotion regulation strategy use in 75 infants between 6 and 18 months during interactions with strangers. Compared to 12- and 18-month olds, the 6-month olds were more likely to use gaze aversion and fussing as their primary regulation strategy and were less likely to use self-soothing and self-distraction. (HTH)

This study investigated problems related to the consistency of infants' reactions to different strangers and unfamiliar behavior. Eighty infants were studied in matched groups of eight boys and eight girls each at ages 4 1/2, 6 1/2, 8 1/2, 10 1/2, and 12 1/2 months. Three sets of measures of infants' reactions to strangers were collected from…

Adults (either mothers or strangers) presented unfamiliar foods to 1- to 4-year-olds individually in their homes. Childrens' acceptance of the food was examined when the adults were eating and when they were simply offering the food. It was concluded that social facilitation could account for the data obtained. (Author/GO)

This study investigated the way 12 infants, aged 1 month and 2 months, scanned the still and expressionless faces of their mothers, of strange women, and of strange men. Each infant was placed in a padded head-restraining cradle under a half-silvered mirror which was angled at 45 degrees to enable the child to view an adult's face at an optical…

To assess the validity of attachment scores derived from the Ainsworth "strange situation", 56 1-year-olds and 79 2-year-olds accompaned by either the mother, the father, or a brief acquaintance were studied. Proximity to the adult, duration of play, crying, activity, and the incidence of looks and distance bids were measured. (Author/CS)

Tests the hypothesis that, while the difference in rate of smiling to O degree v non-O degree orientations will diminish with increasing age with silent and/or unfamiliar faces, infants over 14 weeks of age should continue to discriminate between a talking familiar 0 degree face, and all other combinations of orientation, familiarity, and silent…

The ability of infants to recognize their mothers as distinct from others was investigated by presenting 6 boys and 6 girls at two age levels (5 weeks and 13 weeks) with the following six sequential stimulus conditions: (1) mother's face (MO); (2) stranger's face (SO); (3) mother's face with stranger's voice (MS); (4) stranger's face with mother's…

Six infants were filmed at 15 and 30 weeks of age while alone and in the presence of an adult (mother or stranger) who interacted with the infant or remained passive. Signal detection analysis of ratings made by judges showed that infant behavior at both ages varied in accord with whether or not an adult was present. (Author/DB)

Filmed 30 infants monthly between one and seven months of age where mothers or unfamiliar women responded to their cries by picking up or talking to the infants. Results suggest that infants develop conditioned associations among distress-relief patterns by one month, and cognitive expectations by four or five months. (Author/BB)