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Petrill, Stephen A.; Deater-Deckard, Kirby – Developmental Science, 2004
Prior research suggests shared environmental influences on cognitive performance are important in early childhood. However, few studies have attempted to identify the factors comprising this shared environmental variance. To address this issue, we examined the covariance between task orientation, parental warmth, socioeconomic status and general…
Descriptors: Twins, Young Children, Environmental Influences, Cognitive Ability