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This study explored the relationship among infant temperament, maternal concern, and adjustment during early infancy, and the stability of these variables over time. Infants identified as difficult were found to change considerably across three time points (between five weeks and six months), suggesting the need for caution in prognostication with respect to temperament difficulties in infancy. Further implications for the care of young infants and their families are discussed.
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Kronstadt et al. (1979) studied this question.
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