Infant temperament and performance on the Bayley Scales of Infant Development at 4, 8, and 12 months of age |
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| Authors: | Jeffrey W. Fagen Jayne M. Singer Phyllis S. Ohr Lori K. Fleckenstein |
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| Affiliation: | 1. MDRC, USA;2. New York University, USA;3. University of Texas at Austin, USA;1. Nutricia Research, Uppsalalaan 12, 3584, CT, Utrecht, the Netherlands;2. Department of Pediatric Gastroenterology and Hepatology, Beatrix Children''s Hospital–University Medical Center Groningen, University of Groningen, Post Office Box 30.001, 9700 RB, Groningen, the Netherlands;3. Nutricia Research, Matrix Building #05-01B, Singapore 138671, Singapore |
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| Abstract: | Infants were assessed with the Rothbart Infant Behavior Questionnaire (an objective measure of infant temperament based on maternal reports) and the complete Bayley Scales of Infant Development (BSID) at 4, 8, and 12 months of age. Activity level was related to BSID performance at each age with babies who obtained higher scores rated as more active. Activity level was also related to the infants' behavior during the test administration at 8 and 12 months. A negative relation was found between smiling and laughter and the mental development index at 8 and 12 months. These data suggest that aspects of infant temperament as assessed by maternal report share a small amount of variance with BSID performance and the amount of shared variance increases with age. |
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| Keywords: | infant temperament infant mental development Bayley Scales of Infant Development |
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