Document Detail

Expectancy learning from probabilistic input by infants.
MedLine Citation:
PMID:  23439947     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Across the first few years of life, infants readily extract many kinds of regularities from their environment, and this ability is thought to be central to development in a number of domains. Numerous studies have documented infants' ability to recognize deterministic sequential patterns. However, little is known about the processes infants use to build and update representations of structure in time, and how infants represent patterns that are not completely predictable. The present study investigated how infants' expectations fora simple structure develope over time, and how infants update their representations with new information. We measured 12-month-old infants' anticipatory eye movements to targets that appeared in one of two possible locations. During the initial phase of the experiment, infants either saw targets that appeared consistently in the same location (Deterministic condition) or probabilistically in either location, with one side more frequent than the other (Probabilistic condition). After this initial divergent experience, both groups saw the same sequence of trials for the rest of the experiment. The results show that infants readily learn from both deterministic and probabilistic input, with infants in both conditions reliably predicting the most likely target location by the end of the experiment. Local context had a large influence on behavior: infants adjusted their predictions to reflect changes in the target location on the previous trial. This flexibility was particularly evident in infants with more variable prior experience (the Probabilistic condition). The results provide some of the first data showing how infants learn in real time.
Alexa R Romberg; Jenny R Saffran
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Publication Detail:
Type:  Journal Article     Date:  2013-01-11
Journal Detail:
Title:  Frontiers in psychology     Volume:  3     ISSN:  1664-1078     ISO Abbreviation:  Front Psychol     Publication Date:  2012  
Date Detail:
Created Date:  2013-02-26     Completed Date:  2013-02-27     Revised Date:  2013-11-04    
Medline Journal Info:
Nlm Unique ID:  101550902     Medline TA:  Front Psychol     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  610     Citation Subset:  -    
Department of Psychology and Waisman Center, University of Wisconsin - Madison Madison, WI, USA.
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