Empirical research supporting the contention that insecure attachment is related to internalizing behaviors has been inconsistent. Across 60 studies including 5,236 families, we found a significant, small to medium effect size linking insecure attachment and internalizing behavior (observed d = .37, 95% CI [0.27, 0.46]; adjusted d = .19, 95% CI [0.09, 0.29]). Several moderator variables were associated with differences in effect size, including concurrent externalizing behavior, gender, how the disorganized category was treated, observation versus questionnaire measures of internalizing behavior, age of attachment assessment, time elapsed between attachment and internalizing measure, and year of publication. The association between avoidant attachment and internalizing behavior was also significant and small to moderate (d = .29, 95% CI [0.12, 0.45]). The effect sizes comparing resistant to secure attachment and resistant to avoidant attachment were not significant. In 20 studies with 2,679 families, we found a small effect size linking disorganized attachment and internalizing behavior (observed d = .20, 95% CI [0.09, 0.31]); however, the effect size was not significant when adjusted for probable publication bias (d = .12, 95% CI [-0.02, 0.23]). The existing literature supports the general notion that insecure attachment relationships in early life, particularly avoidant attachment, are associated with subsequent internalizing behaviors, although effect sizes are not strong.

The central premise of attachment theory is that the security of the early child-parent bond is reflected in the child's interpersonal relationships across the life span. This meta-analysis was based on 63 studies that reported correlations between child-parent attachment and children's peer relations. The overall effect size (ES) for child-mother attachment was in the small-to-moderate range and was quite homogeneous. ESs were similar in studies that featured the Strange Situation and Q-sort methods. The effects were larger for peer relations in middle childhood and adolescence than for peer relations in early childhood. ESs were also higher for studies that focused on children's close friendships rather than on relations with other peers. Gender and cultural differences in ESs were minimal. The results for the few studies on father-child attachment were inconclusive.

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Although the quality of the attachment relationship is often cited as an important determinant of development, the extent of impact of this environmental influence in shaping behavioral outcomes has been a matter of considerable debate. This may, in part, be because of the variability in methodologies used for assessing attachment across infancy, childhood, and adolescence, including behavioral, representational, and questionnaire measures of attachment. Previous meta-analyses of the relations between attachment and internalizing and externalizing problems have focused on the behavioral measures of attachment used primarily in infancy. The current meta-analysis is a comprehensive examination of the literature on attachment and behavioral problems in children aged 3-18 years, focusing on the representational and questionnaire measures most commonly used in this age range. When secure attachment was compared with insecure attachment, modest associations with internalizing behavior (165 studies; 48,224 families; d = .58; 95% confidence interval [CI] [.52-.64]) were found. Multivariate moderator analyses were used to disentangle the unique influence of each significant univariate moderator more precisely, and results revealed that effect sizes decreased as the child aged, and were larger in studies in which the participants were ethnically White, where the child was the problem informant, and when the internalizing measure was depressive symptoms. Attachment and externalizing behavior were also associated (116 studies; 24,689 families; d = .49; 95% CI [42-.56]), and effect sizes were larger in ethnically White samples, and in those where the child was the problem informant. Avoidant, ambivalent, and disorganized attachment classifications were associated with internalizing behavior, but only disorganized attachment was associated with externalizing behavior.

Early LI rather than speech impairment is clearly associated with continued academic difficulties into adulthood. These results speak to the need for intensive, early intervention for LI youngsters.

This report concerns the speech and language outcomes of young adults (N = 242) who participated in a 14-year, prospective, longitudinal study of a community sample of children with (n = 114) and without (n = 128) speech and/or language impairments. Participants were initially identified at age 5 and subsequently followed at ages 12 and 19. Direct assessments were conducted in multiple domains (communicative, cognitive, academic, behavioral, and psychiatric) at all three time periods. Major findings included (a) high rates of continued communication difficulties in those with a history of impairment; (b) considerable stability in language performance over time; (c) better long-term outcomes for those with initial speech impairments than for those with language impairments; and (d) more favorable prognoses for those with specific language impairments than for those with impairments secondary to sensory, structural, neurological, or cognitive deficits. These general conclusions held when either a liberal or a more stringent criterion for language impairment was employed. Some of these findings are consistent with those from earlier follow-up studies, which used less optimal methods. Thus, the present replication and extension of these findings with a sound methodology enables greater confidence in their use for prognostic, planning, and research purposes.

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