No bridge too high: Infants decide whether to cross based on the probability of falling not the severity of the potential fall
Identifieur interne : 001B43 ( Pmc/Corpus ); précédent : 001B42; suivant : 001B44No bridge too high: Infants decide whether to cross based on the probability of falling not the severity of the potential fall
Auteurs : Kari S. Kretch ; Karen E. AdolphSource :
- Developmental science [ 1363-755X ] ; 2013.
Abstract
Do infants, like adults, consider both the probability of falling and the severity of a potential fall when deciding whether to cross a bridge? Crawling and walking infants were encouraged to cross bridges varying in width over a small drop-off, a large drop-off, or no drop-off. Bridge width affects the probability of falling, whereas drop-off height affects the severity of the potential fall. For both crawlers and walkers, decisions about crossing bridges depended only on the probability of falling: As bridge width decreased, attempts to cross decreased, and gait modifications and exploration increased, but behaviors did not differ between small and large drop-off conditions. Similarly, decisions about descent depended on the probability of falling: They backed or crawled into the small drop-off, but avoided the large drop-off. With no drop-off, infants ran straight across. Results indicate that experienced crawlers and walkers accurately perceive affordances for locomotion, but they do not yet consider the severity of a potential fall when making decisions for action.
Url:
DOI: 10.1111/desc.12045
PubMed: 23587034
PubMed Central: 3628785
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