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Blind infants in random environments: further predictions

Blind infants in random environments: further predictions In their target article, Triesch (2006 ) propose a simple model to account for the emergence of gaze following behaviour in infants. They justify the simplifications of the model by asserting that they are interested in the conditions that are sufficient for the development of gaze following behaviour. I think, however, that some of these simplifications are not just sufficient but are also necessary for their model to work. In this commentary I shall focus on two aspects of their model that, I suggest, are essential for the demonstration of the emergence of gaze following: the randomness of the environment and the blindness of the infant. Triesch et al. invited the readers to download and experiment with their software, and derive further predictions from their model, and I was happy to accept their offer. To see whether the randomly changing location of the target was crucial for the development of gaze following in the model, I fixed the target location, leaving all other parameters at default value. In this fixed environment, Triesch et al. 's GFI (gaze following index) for the infant model reached .38 after 10 6 iterations, which is close to the value they reported for http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Developmental Science Wiley

Blind infants in random environments: further predictions

Csibra, Gergely
Developmental Science , Volume 9 (2) – Mar 1, 2006
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References (1)

Publisher
Wiley
Copyright
Copyright © 2006 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1363-755X
eISSN
1467-7687
DOI
10.1111/j.1467-7687.2006.00471.x
pmid
16472312
Publisher site
See Article on Publisher Site

Abstract

In their target article, Triesch (2006 ) propose a simple model to account for the emergence of gaze following behaviour in infants. They justify the simplifications of the model by asserting that they are interested in the conditions that are sufficient for the development of gaze following behaviour. I think, however, that some of these simplifications are not just sufficient but are also necessary for their model to work. In this commentary I shall focus on two aspects of their model that, I suggest, are essential for the demonstration of the emergence of gaze following: the randomness of the environment and the blindness of the infant. Triesch et al. invited the readers to download and experiment with their software, and derive further predictions from their model, and I was happy to accept their offer. To see whether the randomly changing location of the target was crucial for the development of gaze following in the model, I fixed the target location, leaving all other parameters at default value. In this fixed environment, Triesch et al. 's GFI (gaze following index) for the infant model reached .38 after 10 6 iterations, which is close to the value they reported for

Journal

Developmental Science – Wiley

Published: Mar 1, 2006

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