Fluent conversation requires temporal organization between conversational exchanges. By performing a systematic review and Bayesian multi-level meta-analysis, we map the trajectory of infants' turn-taking abilities over the course of early development (0 to 70 months). We synthesize the evidence from 26 studies (78 estimates from 429 unique…

Studies of infant motor development in autism spectrum disorder (ASD) have increased in recent years. This article synthesized this literature through meta-analysis to assess (a) whether infant motor ability differs in ASD relative to neurotypical controls; and (b) whether motor ability and communication are related in infants with ASD. Study 1…

Previous work suggests that key factors for replicability, a necessary feature for theory building, include statistical power and appropriate research planning. These factors are examined by analyzing a collection of 12 standardized meta-analyses on language development between birth and 5 years. With a median effect size of Cohen's d = 0.45 and…

This study addresses the extent to which insecure and disorganized attachments increase risk for externalizing problems using meta-analysis. From 69 samples (N = 5,947), the association between insecurity and externalizing problems was significant, d = 0.31 (95% CI: 0.23, 0.40). Larger effects were found for boys (d = 0.35), clinical samples (d =…

Presents meta-analysis evidence of the association between paternal sensitivity and infant-father attachment from eight studies with 546 families (combined effect size r = 0.13). A meta-analysis of 950 families from 14 studies found an overall correlation of 0.17 between infant-mother and infant-father attachment. Presents a data-based model of…

Examines 2,000 Strange Situation classifications obtained in eight different countries. Differences and similarities between distributions in classifications of samples are investigated using correspondence analysis. Substantial intracultural differences are established; data also suggest a pattern of cross-cultural differences. (Author/RWB)

Conducted meta-analysis of 66 studies on parental antecedents of attachment security. Found that maternal sensitivity was an important but not exclusive condition of attachment security in normal settings. Mutuality, Synchrony, Stimulation, Positive Attitude, and Emotional Support were associated with security. Advocated a contextual level to…

Maintains that it is important to distinguish theory testing from effect-size evaluation when considering the impact of mothering on attachment security. Contends that it is possible that the De Wolff and van IJzendoorn meta-analysis both over- and underestimates mothering effects, as would be the case if infants varied in their susceptibility to…

Meta-analysis of the A-not-B error was conducted, using logistic regression, on studies conducted before September 1997. Results replicated earlier findings, with exception that the number of trials at the A location was a significant predictor, and the number of locations was a significant predictor of the proportion of infants who searched…

This review of literature on infant habituation and recognition memory performance as predictors of later IQ concludes that the level of prediction is (1) substantial; (2) higher for at-risk than nonrisk children; and (3) not higher than the level of predictions based on parental education and socioeconomic status. (MDM)

Analyzed data from 11 studies of concordance of mother/father attachment to an infant based on the Strange Situation. Found that security of attachment, type of insecurity, and subcategory classification of security to one parent depended on the other parent. Discussed parenting styles and infant temperament. (BC)

Argues that although meta-analysis makes an important contribution to summarizing attachment studies, it limits the conceptual understanding to simple causal models and ignores family systems models that could illuminate the development of secure and insecure attachment. Maintains that fathers' role in attachment and the impact of the quality of…