Spatial matching--the ability to distribute search effort in accord with the distribution of hidden resources--was studied in 18- to 54-month-old children. The principal development was the appropriate use of win-shift response. (Author/RWB)

Quantitatively describes the gait development of a group of African children to determine how pattern changes would relate to growth and maturation. A total of 65 children from the Gusii tribe of southwestern Kenya, ranging in age from 13 to 69 months, were selected for study. (Author/RH)

This study of 59 children (ages 1-3) at risk for severe mental retardation suggests that subjects exhibited repetitive motor behaviors topographically similar to those exhibited in typical infant development; there were significant age differences in expression of these behaviors; and a small percentage of these children exhibited atypical…

Examines the childrearing correlates of impulse control in 18 mothers and their 14-month-old toddlers. Shows that mothers who relied on physical punishment had infants who were more likely to ignore maternal prohibitions, to manipulate breakable objects, and to show low levels of nonverbal competence seven months later. (HOD)

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)

Tests the validity and reliability of a scale (Mental Development Scales: Birth to Three Years) designed to assess developmental levels of children from birth to three years. (HOD)

Investigates the influence of infant-mother attachment patterns on the development of peer interaction between the toddler and preschool periods. Notes that, in an initial encounter with an unfamiliar peer, attachment patterns appear to be related more to the child's attractiveness as an interactive partner than to the child's own active interest…

Written for researchers and clinicians, this book integrates key perspectives in order to illuminate common beliefs about core processes of emotional development. The book is divided into three parts. Part 1 discusses the nature of emotional development. Topics covered here include: (1) questions relevant in a developmental assessment of emotions;…