Language Through Routines: How Well Do Self-Report Measures Capture Parental Language Input?
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2025-07-10
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en
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Early language development predicts children's cognitive and socio-emotional abilities, influencing long-term successes. While both genetic and environmental factors matter, parental language input is key, making reliable and valid assessment of this input essential. This quantitative observational study examined the extent to which a parental input quantity score captures the amount of observed parental language input. The study 1) evaluated how well the parental quantity input score reflects recorded child-directed speech, 2) assessed the score’s psychometric properties, and 3) explored its relationship with children’s expressive vocabulary. Analyses show that the parental input score does not directly correspond to observational audio data. However, the score has good psychometric properties and a moderate relation with children’s vocabulary, suggesting that the score may capture meaningful aspects of the language environment that are not similarly reflected in recordings. Nevertheless, more thorough analyses are needed to be able to make strong claims about the score’s validity. These results highlight the value of well-constructed self-report measures as a complementary approach in early language development research.
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