Document Detail

The development of visual expectations in the first year.
MedLine Citation:
PMID:  11108091     Owner:  NLM     Status:  MEDLINE    
The development of expectations was investigated by using the Visual Expectations Procedure. In Experiment 1, 128 infants aged 6-, 9-, and 12-months-old saw two 40-trial sequences of a videotaped mechanical toy appearing in various locations. The sequences represented an alternation pattern (i.e., ABAB) or a complex pivot pattern (i.e., ABCBABCB). In Experiment 2, 76 infants aged 4-, 8-, and 12-months-old saw either a left-right alternation or a top-bottom alternation. Reaction time improved and the percentage of anticipations increased between 6 and 9 months in Experiment 1 and between 4 and 8 months in Experiment 2 but not thereafter. Anticipations for the pivot sequence and for younger infants on both sequences were often incorrect (i.e., gaze shifts occurred before stimulus onset but were not directed toward the upcoming stimulus). We conclude that young infants have expectations that reflect some degree of general or procedural knowledge, but it is not clear that this behavior implies specific, articulated expectations about upcoming events.
J S Reznick; K Chawarska; S Betts
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Child development     Volume:  71     ISSN:  0009-3920     ISO Abbreviation:  Child Dev     Publication Date:    2000 Sep-Oct
Date Detail:
Created Date:  2001-03-22     Completed Date:  2001-05-31     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0372725     Medline TA:  Child Dev     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1191-204     Citation Subset:  IM    
Department of Psychology, University of North Carolina, Chapel Hill 27599-3270, USA.
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MeSH Terms
Age Factors
Analysis of Variance
Child Development*
Pattern Recognition, Visual*
Reaction Time
Grant Support

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