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The Relative Contribution of Infants, Mothers, and Family Socioeconomic Characteristics on Expressive Vocabulary Acquisition of 24-Month-Old Infants

  • THE KOREAN JOURNAL OF DEVELOPMENTAL PSYCHOLOGY
  • 2011, 24(2), pp.137-154
  • Publisher : The Korean Society For Developmental Psychology
  • Research Area : Social Science > Psychological Science

장유경 1 SUNG, JIHYUN 1

1성균관대학교

Accredited

ABSTRACT

This study examined the relative contribution of infant, mother, and family socioeconomic characteristics on expressive vocabulary acquisition of 24-month-olds. A sample of 320 infants and their mothers were recruited for this study. Results indicated that infants’ auditory memory(specifically, listening and repetition ability), the amount of expressive vocabulary at 18 months, adaptability, mothers’ linguistic inputs, monthly family income, and the amount of monthly book expense, significantly contributed to expressive vocabulary at 24 months of infant age in that order and together explained 55% of the variance of infants’ expressive vocabulary. The implications on development of language program for young children were discussed.

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