Author's Keywords: habituation, information processing, comparator theory, visual recognition, categorization	Convention All Academic Convention is the premier solution for your association's abstract management solutions needs. Submission - Custom fields, multiple submission types, tracks, audio visual, multiple upload formats, automatic conversion to pdf. Review - Peer Review, Bulk reviewer assignment, bulk emails, ranking, z-score statistics, and multiple worksheets! Reports - Many standard and custom reports generated while you wait. Print programs with participant indexes, event grids, and more! Scheduling - Flexible and convenient grid scheduling within rooms and buildings. Conflict checking and advanced filtering. Communication - Bulk email tools to help your administrators send reminders and responses. Use form letters, a message center, and much more! Management - Search tools, duplicate people management, editing tools, submission transfers, many tools to manage a variety of conference management headaches! Click here for more information.
Association: Name: XVth Biennial International Conference on Infant Studies URL: http://www.isisweb.org
Citation: URL: http://www.allacademic.com/meta/p94001_index.html Direct Link: HTML Code:

Pahnke, Janna. and Pauen, Sabina. "Habituation to a Single Stimulus versus to a Stimulus Category: Testing the Comparator Model of Infant Information Processing" Paper presented at the annual meeting of the XVth Biennial International Conference on Infant Studies, Westin Miyako, Kyoto, Japan, Jun 19, 2006 <Not Available>. 2009-05-25 <http://www.allacademic.com/meta/p94001_index.html>

Pahnke, J. and Pauen, S. , 2006-06-19 "Habituation to a Single Stimulus versus to a Stimulus Category: Testing the Comparator Model of Infant Information Processing" Paper presented at the annual meeting of the XVth Biennial International Conference on Infant Studies, Westin Miyako, Kyoto, Japan <Not Available>. 2009-05-25 from http://www.allacademic.com/meta/p94001_index.html

Publication Type: Individual Poster Abstract: Background and Aims: Visual habituation and dishabituation responses are assumed to reflect information processing abilities in infancy. Following the comparator model based on Sokolov (1963), two factors - speed of processing and discriminatory memory - contribute to individual differences in infant cognition and to the continuity in cognitive functioning from infancy to later ages. Thus, individual differences in habituation performance are assumed to reflect differences in speed of processing (i.e. encoding the habituation stimulus and forming a mental representation), whereas differences in dishabituation responses indicate discriminatory memory abilities (i.e. detecting the mismatch between mental representation and test stimulus). While the comparator model has been empirically supported by visual recognition studies presenting one stimulus for habituation, its validity is less clear with respect to categorization studies in which different habituation stimuli of the same kind are presented. The aim of the present study was to compare habituation responses across these two tasks, testing the same infants. Methods: Two visual habituation tasks involving abstract geometric stimuli were developed: In a single-stimulus task, infants were habituated to one black-and-white star-shaped pattern presented repeatedly before a new stimulus of the same kind was presented at test. In a categorization task, infants were habituated to different exemplars from a category of similar shaped and colored objects (e.g. angular red-and-orange) and tested with an object from a category differing in color and shape (e.g. round blue-and-green). In a modified infant-control design, N = 41 five-months-olds and N = 36 seven-months-olds were tested with both types of task (order of tasks counterbalanced). Key Results: Infants showed great variance in total looking times as well as in strength of habituation and dishabituation responses. Total looking times were significantly correlated between both tasks (5 months: r=.42, p<.01; 7 months: r=.60, p<.01). About two thirds of all infants (66.2%) showed a consistent habituation response (yes, no) in both tasks. For the single-stimulus-task, strength of habituation and dishabituation were positively related (5 months: r=.24, p=.07; 7 months: r=.43, p<.01). Corresponding relations were not found for the categorization task, however. Conclusions: The positive relations between looking behavior in both tasks indicate some intra-individual consistency in information processing over different types of visual fixation tasks. Relations between habituation and dishabituation responses were found only for the visual recognition but not for the categorization task, suggesting that the processing of categorical stimuli might differ from the processing of a single repeated stimulus. Implications of these findings with respect to comparator theory will be discussed.

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