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Gartstein, Maria A.; Hancock, Gregory R. – Merrill-Palmer Quarterly: Journal of Developmental Psychology, 2019
Temperament growth has been examined in infancy, but the spectrum of reactive and regulatory dimensions was not previously considered. We evaluated linear and nonlinear growth trajectories for overarching factors and fine-grained indicators of infant temperament obtained via parent report (N = 143) at 4, 6, 8, 10, and 12 months of age.…
Descriptors: Infants, Personality Development, Gender Differences, Socioeconomic Status