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Associative word learning in infancy: A meta-analysis of the switch task
Angeline Sin Mei Tsui1, Krista Byers-Heinlein2, Christopher T Fennell1
1School of Psychology, University of Ottawa.
Developmental Psychology
|February 8, 2019
Summary
Infants learn word-object associations using the Switch task. Factors like word type and bilingualism influence learning, supporting the PRIMIR framework but suggesting further research into the bilingual advantage and research practices.
Area of Science:
- Developmental Psychology
- Cognitive Science
- Linguistics
Background:
- Associative word learning is crucial for early language acquisition.
- The Switch task is a common method to assess infant word-object pairing abilities.
- Understanding factors influencing infant word learning is key to developmental theories.
Purpose of the Study:
- To conduct a meta-analysis of Switch task studies to determine average effect size.
- To investigate how experimental factors influence infant performance on the Switch task.
- To evaluate the findings in relation to the PRIMIR theoretical framework.
Main Methods:
- Meta-analysis of 141 Switch task studies.
- Involved 2,723 infants aged 12 to 20 months.
- Employed random-effect and fixed-effect models to analyze data.
Main Results:
- The average effect size for the Switch task was moderate (Cohen's d = 0.32).
- Language-typical, dissimilar words and facilitative cues improved performance, especially in younger infants.
- Infants learning two languages showed an advantage in word-object association learning.
Conclusions:
- Findings support the PRIMIR framework for infant speech perception and word learning.
- Further theoretical development is needed to explain the observed bilingual advantage.
- The study highlights potential issues with research practices, recommending preregistration and transparent data analysis.
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