Background: To document whether the sociocognitive peculiarities of people with Down Syndrome impact the construction of attachment at different ages, a systematic review of the literature was carried out. Method: This review followed the Preferred Reporting Items for Systematic Reviews and MetaAnalyses, was conducted on three databases: psycINFO,…

Meta-analyses of head circumference in autistic individuals exist; however, simple meta-analytic approaches are limited. Consequently, we gathered head circumference raw data of autistic (N = 2381) and typically developing participants (N = 994) by re-analysing the data from previously published studies together. The present study found no mean…

Over the past three decades, our understanding of science learning in early childhood has improved exponentially and today we have a strong empirically based understanding of science experiences for children aged three to six years. However, our understanding of science learning as it occurs for children from birth to three years, is limited. We…

Objective: The aim of the study was to conduct a meta-analysis of research examining the early speech and language functioning of young children, birth to age 8;11 (years;months), with nonsyndromic cleft lip and/or palate (NSCL/P) compared to their peers without NSCL/P. Method: We conducted a random-effects metaregression using 241 effect sizes…

This article reviews research conducted after the American Academy of Pediatrics 1999 recommendation against screen exposure for children less than 2 years old. Television in the background disrupts play and parent-child interactions. Background TV exposure is associated with negative cognitive and language outcomes. Children begin to understand…

Autism is an extensively studied disorder in which the gender disparity in prevalence has received much attention. In contrast, only a few studies examine gender differences in symptomatology. This systematic review and meta-analysis of 22 peer reviewed original publications examines gender differences in the core triad of impairments in autism.…

During the past three decades, extensive literature has accumulated on the early years of life for children. Research findings unequivocally agree that these years are a critical period of intense learning for children which provides the foundation for later academic and social success. This review explores the literature on the complex…

Three general purposes of research in human development are to explain, predict, and modify behavior. Studies of listening during early childhood (birth through age eight) are of particular significance to the field because they enable researchers to describe listening processes from their very origins (explain), they demonstrate the effects of…

Proposes and briefly discusses several hypotheses concerning the unique developmental status of peer relations in the first three years of life. Analyzes the meaning of individual differences in very early peer competencies. Suggests that developmental differences in peer relations might translate into hypotheses regarding early individual…