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Related Experiment Video

Updated: Jun 2, 2026

Transcranial Direct Current Stimulation (tDCS) of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition

Transcranial Direct Current Stimulation (tDCS) of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition

Published on: July 13, 2019

Learning times for large lexicons through cross-situational learning.

Richard A Blythe¹, Kenny Smith, Andrew D M Smith

¹SUPA, School of Physics and Astronomy, University of Edinburgh Cognition and Communication Research Centre, Department of Psychology, Northumbria University Language Evolution and Computation Research Unit, Linguistics and English Language, University of Edinburgh.

Cognitive Science

|May 14, 2011

Summary

Cross-situational learning enables acquiring large vocabularies even with word meaning uncertainty. Mathematical modeling shows this learning strategy is plausible for human lexicon acquisition within reasonable timeframes.

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Transcranial Direct Current Stimulation (tDCS) of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition

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Published on: June 25, 2019

Area of Science:

Cognitive Science
Developmental Psychology
Computational Linguistics

Background:

Cross-situational learning is a proposed mechanism for word meaning acquisition.
Concerns exist about its efficiency for large lexicons given referential uncertainty.

Purpose of the Study:

To mathematically assess the plausibility of cross-situational learning for large-scale vocabulary acquisition.
To estimate lexicon learning times under varying uncertainty levels.

Main Methods:

Developed a mathematical model of cross-situational word learning.
Analyzed learning dynamics across different learning strategies.
Estimated time required to build human-scale lexicons.

Main Results:

Cross-situational learning effectively supports large vocabulary acquisition despite high referential uncertainty.
Calculated plausible learning times for various cross-situational learning strategies.
Demonstrated that rapid individual word learning is not a prerequisite for large lexicon capacity.

Conclusions:

Cross-situational word learning is a viable mechanism for acquiring extensive vocabularies.
Concerns about unrealistic learning times for cross-situational learning are not supported by the model.
The capacity for large lexicon acquisition may not depend on the speed of individual word learning.