Children tend to overestimate their performance on a variety of tasks and activities. The present meta-analysis examines the specificity of this phenomenon across age, tasks, and more than five decades of historical time (1968-2021). Self-overestimation was operationalized as the ratio between children's prospective self-estimates of task…

Theories of cultural evolution posit that cues of competence-based prestige, rather than formidability-based dominance, should guide culturally transmitted learning, but recent work suggested that French and Kaqchikel Guatamalan preschoolers place their epistemic trust in dominant others. In contrast, this study shows that 249 three- to…

This meta-analysis examined the relationship between prenatal maternal stress and/or anxiety and the outcomes of children aged 3 months to 9 years. Of the 8754 studies published before June 2021 that were synthesized, 17 conducted in Western countries were included in the meta-analysis (N[subscript total] = 23,307; M[subscript males] 54%;…

This systematic review and meta-analysis considered evidence of guided play compared to direct instruction or free play to support children's learning and development. Interventions from 39 studies were reviewed (published 1977-2020); 17 were included in meta-analysis (N[subscript total] = 3893; M[subscript childage] = 1-8 years; M[subscript…

This meta-analysis synthesizes research on media use in early childhood (0-6 years), word-learning, and vocabulary size. Multi-level analyses included 266 effect sizes from 63 studies (N[subscript total] = 11,413) published between 1988-2022. Among samples with information about race/ethnicity (51%) and sex/gender (73%), most were majority…

In a series of meta-analyses, paternal sensitivity was associated with children's (age range: 7 months-9 years) overall cognitive functioning (N = 3,193; k = 23; r = 0.19), including language skills (k = 9; r = 0.21), cognitive ability (k = 9; r = 0.18), and executive function (k = 8; r = 0.19). Paternal sensitivity was not associated with…

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…

This study conducted two meta-analyses to synthesize the association between children's language skills and two broad-band dimensions of psychopathology: internalizing and externalizing. Pooled estimates across 139 samples (externalizing k = 105; internalizing k = 90) and 147,305 participants (age range: 2-17 years old; mean % males: 53.75; mean %…