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Related Concept Videos

Language Development01:22

Language Development

319
Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
319
Language and Cognition01:27

Language and Cognition

329
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
329
The Nativist Approach01:21

The Nativist Approach

34
The nativist approach to infant cognitive development proposes that infants are born with inherent knowledge structures that allow them to interpret the world almost immediately. This perspective contrasts with earlier developmental theories, such as those proposed by Jean Piaget, which emphasized a more gradual acquisition of cognitive abilities through interaction with the environment. One key concept in this approach is object permanence — the understanding that objects continue to...
34

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Related Experiment Video

Updated: Jun 10, 2025

Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
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Testing the relationship between preferences for infant-directed speech and vocabulary development: A multi-lab

Melanie Soderstrom1, Joscelin Rocha-Hidalgo2, Luis E Muñoz3

  • 1University of Manitoba.

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|October 18, 2024
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Summary

This study investigated if infants preferring infant-directed speech (IDS) early on impacts later vocabulary. Researchers found no link between IDS preference and vocabulary size in toddlers, questioning the reliability of lab-based IDS preference measures.

Keywords:
infant-directed speechvocabulary development

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Area of Science:

  • Developmental Psychology
  • Linguistics
  • Child Language Acquisition

Background:

  • Infants exhibit a preference for infant-directed speech (IDS) over adult-directed speech (ADS).
  • Prior research suggests a correlation between IDS exposure and language development outcomes, including vocabulary size.

Purpose of the Study:

  • To examine the relationship between infants' early preference for IDS and their subsequent vocabulary development.
  • To investigate the predictive validity of IDS preference for language outcomes.

Main Methods:

  • Utilized data from the ManyBabies 1 project, testing IDS preference in infants across 21 laboratories.
  • Collected follow-up Child Development Inventory (CDI) data at 18 and 24 months from a subsample.
  • Conducted preregistered and exploratory analyses on a large sample of infants.

Main Results:

  • No significant evidence was found for a relationship between early IDS preference and vocabulary size at 18 or 24 months.
  • This finding held true for both North American/UK English analyses and broader exploratory analyses.
  • The study highlights potential issues with the test-retest reliability of laboratory-measured IDS preference.

Conclusions:

  • Early preference for infant-directed speech does not appear to predict later vocabulary size.
  • The findings challenge the utility of laboratory-based IDS preference measures as reliable indicators of language development.
  • Further research is needed to understand the factors influencing infant speech preference and its relation to language acquisition.