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Goldilocks Forgetting in Cross-Situational Learning

Ibbotson, Paul; López, Diana G. and McKane, Alan J. (2018). Goldilocks Forgetting in Cross-Situational Learning. Frontiers in Psychology: Cognition, 9, article no. 1301.

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DOI (Digital Object Identifier) Link: https://doi.org/10.3389/fpsyg.2018.01301
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Abstract

Given that there is referential uncertainty (noise) when learning words, to what extent can forgetting filter some of that noise out, and be an aid to learning? Using a Cross Situational Learning model we find a U-shaped function of errors indicative of a "Goldilocks" zone of forgetting: an optimum store-loss ratio that is neither too aggressive nor too weak, but just the right amount to produce better learning outcomes. Forgetting acts as a high-pass filter that actively deletes (part of) the referential ambiguity noise, retains intended referents, and effectively amplifies the signal. The model achieves this performance without incorporating any specific cognitive biases of the type proposed in the constraints and principles account, and without any prescribed developmental changes in the underlying learning mechanism. Instead we interpret the model performance as more of a by-product of exposure to input, where the associative strengths in the lexicon grow as a function of linguistic experience in combination with memory limitations. The result adds a mechanistic explanation for the experimental evidence on spaced learning and, more generally, advocates integrating domain-general aspects of cognition, such as memory, into the language acquisition process.

Item Type: Journal Item
Copyright Holders: 2018 The Authors
ISSN: 1664-1078
Keywords: cross-situational learning; forgetting; memory; noise; word learning
Academic Unit/School: Faculty of Wellbeing, Education and Language Studies (WELS) > Education, Childhood, Youth and Sport > Childhood, Youth and Sport > Childhood and Youth
Faculty of Wellbeing, Education and Language Studies (WELS) > Education, Childhood, Youth and Sport > Childhood, Youth and Sport
Faculty of Wellbeing, Education and Language Studies (WELS) > Education, Childhood, Youth and Sport
Faculty of Wellbeing, Education and Language Studies (WELS)
Item ID: 56611
SWORD Depositor: Jisc Publications-Router
Depositing User: Jisc Publications-Router
Date Deposited: 17 Sep 2018 09:42
Last Modified: 06 Jun 2019 16:58
URI: http://oro.open.ac.uk/id/eprint/56611
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