This study provides evidence of sex-typed behavior in the spontaneous play of infants between 9 1/2 and 15 1/2 months. Eight boys and eight girls at 9 1/2, 11 1/2, 13 1/2, and 15 1/2 months were observed during 15 minutes of free play with a variety of realistic toys equally divided into male, female, and neutral categories. Stereotypical,…

This study investigated whether the acuity threshold for distant targets is elevated for infants ranging in age from 24 to 63 days. Using square wave gratings and a modified staircase procedure, acuity thresholds for each of 331 infants were determined for one or more of the distances 30 cm, 60 cm, 90 cm and 150 cm. Acuity threshold was defined as…

This new addition of a government pamphlet is a guide offering advice and information to new parents. Sections include: You and Your New Baby (handling the baby, care of the mother, feeding, etc.); First Weeks at Home (equipment, formula preparation, bathing, sleeping, crying, colic, etc.); After the First Weeks (temperament, "difficult" babies,…

The percentage of rapid eye movement (REM) during sleep is substantially greater in neonates (infants in first month after birth) than in other children or adults. It was hypothesized that REM rate may decline as rates of many response sequences do when repeatedly elicited. Electrical recordings of eye movements were obtained from a 3-day-old male…

This study tested the hypothesis that newborns selectively orient toward angular elements in their visual field. Subjects were 36 awake and alert infants under 6 days of age. For each newborn, the study compared visual attention to three separately presented stimulus patterns: a complete outline triangle, only the sides of this triangle, and only…

The aims of this study were: (1) to specify who the infant-mother relationship evolves, and (2) to demonstrate how the development of object concept affects the evolution of that relationship. Subjects were 19 male and 17 female Caucasian infants from 4 to 12 months of age. The development of an interpersonal relationship was assessed through the…

Various cradleboards are illustrated. (NQ)

Corneal infrared photography was used to record the visual fixations of 24 infants (4-6 weeks and 10-12 weeks) exposed to simple geometric figures. The results are discussed in relation to developmental changes in responsiveness to visual figures and in increasing ability to process information. (JMB)

The degree to which children aged 2 and under imitated a peer's novel uses of a material was examined. After being trained to emit "correct use responses" with the materials a child was placed in a peer group with instructions to show other children what he had learned. Results are discussed. (SE)

Investigates how language is acquired by children in a lower social class environment. Subjects were two children: a boy (1 year 8 months) and a girl (1 year, 5 months) living in Italy. (MP)

Examines reciprocity in caregiver-child interactions by assessing 24 infants and their mothers with regard to temperament and maternal behavior, respectively. Results suggested that the more difficult the child temperamentally, the less the maternal responsiveness. (JMB)

The relationship between a newborn score of minor physical anomalies and behavior at ages one and two was examined in 63 high anomaly and 78 low anomaly infants. (Author/SBH)

A one-year longitudinal study was conducted of the medical, social, and legal status of 102 abused children identified during 1975. Journal availability: see EC 111 256. (Author)

The link between the quality of attachment in infancy and the quality of play and problem-solving behavior at age two years was examined in 48 infants. (Author/JMB)

Examined the relation of language to thought in a cross-sectional study of 24 infants between 12 and 24 months of age. (Author/JMB)