Examined role of infant and toddler temperament in predicting 2-year olds' empathy. Found that children showed relatively more concern for mother's distress, but were also responsive to unfamiliar victims. Unreacting infants showing little affect also showed less empathy toward the unfamiliar adult almost two years later. Inhibition toward…

Examined relationships between adolescents' explanations for unemployment, poverty, and homelessness, and their beliefs about opportunity, reports of family values, and personal aspirations. Found that likelihood of attributing problems to societal causes was positively related to maternal education and average household income in adolescent's…

Examined processes whereby attachment and other factors contribute to social/emotional adjustment among African-American children. Found that attachment assessed at 4.5 years uniquely predicted perceived social support two years later. Insecure attachment predicted self-reported behavior problems and parental report of internalizing problems.…

Investigated external memory strategies of typical 7-, 9-, 11-, and 17-year olds and 11- and 17-year olds with mild mental retardation using tasks allowing direct comparison of self-report and strategy observed. Found strong positive correlations between frequency of reported and observed strategy use. Self-reports were accurate but not always…

Examined ability of individuals biologically predisposed to poor spatial skills to capitalize on opportunities to develop these skills. Found that for girls with brothers, those from all right-handed families had lower mental-rotation scores than did others. Among children participating in mental-rotation-type activities with their brothers,…

Examined relative contributions of genetic and environmental influences to the covariation between sibling relationships and mother/adolescent relationships in 719 same-sex sibling pairs of varying degrees of genetic relatedness. Found that the overlapping effects of shared environment on the two relationship subsystems explained most of the…

Considers assumptions underlying design of Bussell et al.'s Nonshared Environment in Adolescent Development study. Suggests that a source of the common environment specific to this study is the effect of an individual in mutual ratings of relationship with siblings, leading to a larger common-environment effect across variables than within…

Addresses concerns raised in Neale's commentary regarding the Bussell et al. (1999) Nonshared Environment in Adolescent Development study. Discussion of assumptions focuses on those most relevant to study sample. Because Neale's proposed alternative models did not provide a better fit, the appropriateness of Bussell's model and importance of…

Tested model of gender's moderating effects on behavior problems among early adolescents. Found that increasing girls' internalizing symptoms were partly explained by greater stability in girls' interpersonal vulnerabilities and greater magnitude in coefficients linking girls' relationships with parents and peers and internalizing problems. Boys'…

Estimated parameters of the trajectory of change in marital quality over first 10 years of marriage. Found that both spouses started trajectories of change at fairly high levels of marital quality, with quality declining rapidly in the early years, stabilizing, and then declining again. Individual-differences variables predicted initial status of…

Related maternal depressive symptoms obtained when infants were 1, 6, 15, 24, and 36 months old to child functioning at 36 months. Found that women with chronic symptoms were least sensitive during mother/child play from infancy through 36 months. Maternal sensitivity accounted for group differences in school readiness and verbal comprehension and…

Tested 59 three-year olds three times over seven months to assess the contribution of development of theory of mind and language to one another. Found that earlier language abilities predicted later theory-of-mind test performance (controlling for earlier theory of mind), but earlier theory-of-mind did not predict later language-test performance…

Three experiments tested 21- and 27-month olds' ability to construct a path to a mentally re-presented goal. After seeing the goal-state configuration of problems, both age groups evinced planning. Demonstration of initial solution step was less effective than goal-state exposure. Even with specification of a greater proportion of the goal path,…

Tested predictions of infantile amnesia theory compared with social-interactionist account of autobiographical memory. Found maternal reminiscing style and self-recognition when child was 19 months old uniquely predicted children's shared memory reports across time, even with children's initial language and nonverbal memory factored out.…

Assessed the relationship between a measure of consolidation and transition in moral-judgment development and utility of moral concepts in sociomoral decision making in multiple cross-sectional and longitudinal samples. Found that participants' reliance on a Kohlbergian moral framework was highest during periods of consolidation and lowest during…