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Smith, Lee; van Jaarsveld, Cornelia H. M.; Llewellyn, Clare H.; Fildes, Alison; López Sánchez, Guillermo Felipe; Wardle, Jane; Fisher, Abigail – Research Quarterly for Exercise and Sport, 2017
Purpose: Variability in the timing of infant developmental milestones is poorly understood. We used a twin analysis to estimate genetic and environmental influences on motor development and activity levels in infancy. Method: Data were from the Gemini Study, a twin birth cohort of 2,402 families with twins born in the United Kingdom in 2007.…
Descriptors: Genetics, Environmental Influences, Child Development, Twins
Danielle F. Lowe – ProQuest LLC, 2016
American parents and policymakers are failing to acknowledge the significant links between early childhood literacy and academic success. This experimental study investigated the effects of daily reading with 150 infants between the ages of 14 to 28 months throughout a 28-day period. Participants from all economic, demographic, and ethnic…
Descriptors: Foreign Countries, Infants, Emergent Literacy, Academic Achievement
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Fishburn, Sarah; Meins, Elizabeth; Greenhow, Sarah; Jones, Christine; Hackett, Simon; Biehal, Nina; Baldwin, Helen; Cusworth, Linda; Wade, Jim – Developmental Psychology, 2017
The studies reported here aimed to test the proposal that mind-mindedness is a quality of personal relationships by assessing mind-mindedness in caregiver-child dyads in which the relationship has not spanned the child's life or in which the relationship has been judged dysfunctional. Studies 1 and 2 investigated differences in mind-mindedness…
Descriptors: Parents, Caregiver Child Relationship, Adoption, Comparative Analysis
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Bushnell, I. W. R. – Journal of Experimental Child Psychology, 1979
Five experiments were conducted in order to determine what effect independent movement of an internal element has on the externality effect in young infants, and to consider the value of contrasting explanations of the effect itself. Subjects were 90 infants ranging in age from 28 to 49 days. (MP)
Descriptors: Age Differences, Foreign Countries, Infant Behavior, Infants