Background: Little is known about how children differ in the onset and evolution of separation anxiety (SA) symptoms during the preschool years, and how SA develops into separation anxiety disorder. In a large, representative population-based sample, we investigated the developmental trajectories of SA symptoms from infancy to school entry, their…

Background: Growing research on children's traits as moderators of links between parenting and developmental outcomes has shown that variations in positivity, warmth, or responsiveness in parent-child relationships are particularly consequential for temperamentally difficult or biologically vulnerable children. But very few studies have…

Examined the effects of age at entrance to first grade on success in elementary school, using a set of demographic, social, and early experience variables as covariates. Concluded that entrance age was a far less powerful predictor of academic achievement than were socioeconomic factors. (Author/GR)

As part of a larger Slovene longitudinal study on the impact of the preschool institution on the child's development and his or her school achievements, effects of the age at entry to preschool on children's language were explored. The sample included 82 children, who were divided into two groups depending on their age at entry to the preschool…

This longitudinal study identified hard-to-manage older toddlers and younger preschoolers, assessed the developmental course and prognostic significance of their difficult behavior, and delineated family factors possibly associated with early and persistent problems. Obtained from parents, teachers, and observers, cross-situational and…

Measures of preschool cognition and indicators of family socioeconomic status predicted school enrollment for children in four Guatemalan villages. For children who went to school, socioeconomic status and preschool abilities were associated with age-at-entry, and with the number of grades passed and the maximum grade attained through age seven.…