Temperament Ratings at 2 Weeks, 2 Months, and 1 Year: Differential Stability of Activity and Emotionality

John Worobey, Virginia M. Blajda

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

To determine the usefulness of a temperament perspective in the study of young infants, the mothers of 36 newborns completed the Rothbart (1978) Infant Behavior Questionnaire (IBQ) approximately at 2 weeks and at 2 months after their infants were born and, again, when their infants reached 1 year of age. Moreover, both mothers and infants were observed at home in interaction at 1 month. IBQ activity level, responsivity, and irritability exhibited stability from 2 weeks to 2 months and from 2 months to 12 months. However, only irritability was stable from 2 weeks to 12 months. Although stability of their rank ordering was apparent, IBQ ratings generally increased by the end of 1 year. Observed infant alertness and crying at 1 month were significantly related to IBQ irritability at the first two times of measurement. In contrast, maternal behaviors were associated with later IBQ estimates.

Original languageEnglish (US)
Pages (from-to)257-263
Number of pages7
JournalDevelopmental psychology
Volume25
Issue number2
DOIs
StatePublished - Mar 1989

All Science Journal Classification (ASJC) codes

  • Demography
  • Developmental and Educational Psychology
  • Life-span and Life-course Studies

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