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Direct linkAudun Rosslund; Natalia Kartushina; Nora Serres; Julien Mayor – Child Development, 2025
Growing up with multiple siblings might negatively affect language development. This study examined the associations between birth order, sibling characteristics and parent-reported vocabulary size in 6163 Norwegian 8- to 36-month-old children (51.4% female). Results confirmed that birth order was negatively associated with vocabulary, yet…
Descriptors: Family Size, Birth Order, Siblings, Infants
Tan, Lin; Volling, Brenda L.; Gonzalez, Richard; LaBounty, Jennifer; Rosenberg, Lauren – Child Development, 2022
Emotion understanding develops rapidly in early childhood. Firstborn children (N = 231, 55% girls/45% boys, 86% White, 5% Black, 3% Asian, 4% Latinx, Mage = 29.92 months) were recruited into a longitudinal study from 2004 to 2008 in the United States and administered a series of tasks assessing eight components of young children's emotion…
Descriptors: Child Development, Emotional Development, Siblings, Family Structure
Austerberry, Chloe; Fearon, Pasco; Ronald, Angelica; Leve, Leslie D.; Ganiban, Jody M.; Natsuaki, Misaki N.; Shaw, Daniel S.; Neiderhiser, Jenae M.; Reiss, David – Child Development, 2022
Intellectual performance is highly heritable and robustly predicts lifelong health and success but the earliest manifestations of genetic effects on this asset are not well understood. This study examined whether early executive function (EF) or verbal performance mediate genetic influences on subsequent intellectual performance, in 561 U.S.-based…
Descriptors: Child Development, Intelligence, Genetics, Executive Function
