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Parental reports and experimental studies indicate that parents speak less to their children in the presence of background television. However, there is a lack of home observations examining the relations between infants' background TV exposure and maternal infant-directed speech. In the current study, 32 infants and their mothers were observed for 60 minutes in their homes at 8, 10, and 18 months of age. Results revealed that the number of words, the number of different words, and the number of questions in infant-directed speech were consistently lower in households with background TV. Furthermore, these aspects of maternal language input were negatively related to the duration of background TV, controlling for families' socioeconomic background. These findings suggest that television may have a negative impact on young children's language development via disrupted parent-child interactions in the presence of background TV in the home environment.
Keşşafoğlu et al. (Thu,) studied this question.