In several recent reports, the Carey Infant Temperament Questionnaire has been criticized as a measure of infant temperament. Instead, the dimensions of temperament and the diagnostic categories (i.e., "easy" vs. "difficult" temperament) derived from maternal responses to the questionnaire items have been associated with maternal demographic and personality characteristics and with maternal child-rearing attitudes assessed before the birth of the infant. In this article, results of previous research are reconsidered in light of suggestions and criticisms offered by several temperament researchers. In two new studies the revision of the Infant Temperament Questionnaire (ITQ) was used to assess infant temperament, and personality and/or attitudinal data from the mother were obtained prenatally. Results were consistent across all studies. Prenatally assessed characteristics of the mother, especially anxiety, significantly distinguish mothers whose responses to the ITQ items result in diagnosis of temperamental difficulty for their infants from those whose infants are diagnosed as temperamentally easy during the first 8 months of life. The data suggest that both the original and revised Carey infant temperament scales fail discriminant validity tests and are therefore of only limited use in identifying temperamentally difficult infants.The notion that individual differences in temperament or behavioral style account for significant proportions of the variation in responsiveness to day-to-day life events has been commonplace for many years. Though the endogenous and/or experiential origins of temperament have never been clearly

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