Explored long-term effects of different childrearing contexts on attachment and separation representations of Israeli 16- to 18-year-olds. Found that adolescents raised in a kibbutz communal setting showed higher incidence of nonautonomous attachment representations and less competent coping with imagined separations than adolescents raised in a…

Examined extent to which parent sensitivity, infant affect, and affect regulation at 4 months predicted mother- and father-infant attachment classifications at 1 year. Found that affect regulation and maternal sensitivity discriminated infant-mother attachment groups. The association between maternal sensitivity and infant-mother attachment was…

Examined sibling influence on delinquency in 164 brother and sister pairs over 4-year period. Found that sibling similarity for self-reports of delinquent behavior were highly correlated for brothers and sisters. Conditional effects of high hostile-coercive relationships and older sibling delinquency predicted younger sibling delinquency in both…

Developed and validated Parents of Adolescents Separation Anxiety Scale with parents of sixth, eighth, tenth, and twelfth graders, and college freshmen and seniors. Factor analyses supported two subscales: Anxiety about Adolescent Distancing (AAD) and Comfort with Secure Base Role (CSBR); both showed distinctive change patterns with child age.…

Examined effects on 4- to 6-year-olds of different patterns of mother involvement in child care, self- sufficiency activities, and other services. Found that children of mothers with high involvement in center-based care, education, and job training showed higher cognitive ability than children of mothers with high involvement in only center-based…

Assessed impact of an antipoverty program on family functioning and developmental outcomes for preschool- and school-aged children. Found that the New Hope program had strong positive effects on boys' academic achievement, classroom behavior, positive social behavior, and problem behaviors, and on boys' expectations for advanced education and…

Studied in three experiments the distribution and malleability of visual attention in 5-month-olds while they inspected large geometric designs. Established that infants who were short-lookers had novelty scores above chance, whereas long-lookers demonstrated chance responding. Illuminating different parts of visual display induced long-lookers to…

Investigated the role of person familiarity in 3.5-month-olds' ability to recognize emotional expressions. Found that when more contextual information such as person familiarity was available, infants as young as 3.5 months recognized happy and sad expressions. Findings suggest that in early stages, infants are sensitive to contextual information…

Two experiments investigated the role of spatial prototypes in estimates of location. Found that adults and children ages 7 to 11 years overestimated distances between target locations in different regions and that none displaced objects toward the region centers. Even with boundaries removed during testing, adults and children overestimated…

Used a person-centered analytic strategy with data from Youth Development Study to describe configurations of time use through the high school years. Found that students highly engaged in multiple domains tended to remain so across grade. Students focused on one or two domains frequently changed commitments, school plans, grade point average,…

Examined association between infants' emotional reactivity and reliance on mother and cognitive and language development at 2 years. Found that infants with high reactivity and reliance on mother during emotion challenges had higher cognitive and language skills than infants with low reactivity and reliance. Poor developmental outcomes were…

Three studies examined 2-year-olds' ability to learn novel words when overhearing these words used by others. Found that children ages 2.5 years were equally good at learning novel object labels and action verbs when they were overhearers as when they were directly addressed. For younger 2-year-olds, this was true for object labels, but results…

Examined in 2 studies the ability of 2- and 3-year-olds to learn to use tools via imitation. Found that when shown a correct solution to a tool-using task, all children managed at least a partial solution. When shown an incorrect followed by a correct solution, 2-year-olds produced a partial solution and most 3-year-olds produced a full solution.…

Two studies compared how preschoolers through fifth graders and adults reasoned about psychogenic bodily reactions such as stress-induced headaches. Results supported a developmental path: younger children view psychogenic bodily responses as wholly physical, but with age, view them as both physical and psychological. (Author/KB)

Three experiments examined 3- to 11-year-olds' understanding of entropy, asking whether undifferentiated forces, such as the wind or objects being thrown into the air, could create order or disorder in a set of objects. Found that even 4-year-olds were sensitive to asymmetrical effects of such events. Older children applied this principle more…