Author's Keywords: Categorization, sequential touching, cognitive flexibility	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/p94177_index.html Direct Link: HTML Code:

Mareschal, Denis. and Tan, Seok. "Categorization of hybrid toy stimuli by 18-month-olds: Partonomies, Taxonomies, or “Ad hoc” categories?" 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/p94177_index.html>

Mareschal, D. and Tan, S. H. , 2006-06-19 "Categorization of hybrid toy stimuli by 18-month-olds: Partonomies, Taxonomies, or “Ad hoc” categories?" 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/p94177_index.html

Publication Type: Individual Poster Abstract: David Rakison and colleagues examined the use of object parts to from categories (e.g., Rakison & Butterworth, 1998). They tested 14- to 24-month-olds with a combination of animal, vehicle and hybrid animal-vehicle toys, using a sequential touching task and found that infants’ apparent use of parts to form categories decreased with age: 14-month-olds always formed categories on the basis of parts, 18-month-olds sometimes formed categories on the basis of parts and sometimes on the basis of taxonomic structures, whereas 24-month-olds always formed categories on the basis of taxonomic kind (bodies). We examined the extent to which 18-month-olds would adapt their categorization of normal and hybrid stimuli as a function of context. Fifty-two infants were tested using sequential touching on a set of 8 toys that could be partitioned as containing (1) the global level of animal, (2) the basic level of car, (3) objects having wheels, (4) objects having legs, (5) hybrid objects, or (6) as normal objects. Infants were randomly assigned to one of two prior context conditions in which they were shown some human dolls and trucks. In the Partonomic condition, the experimenter began by pointing out parts of the toys to the infants by bending the dolls at the waist and legs or by turning the trucks upside down and spinning their wheels. In the Taxonomic condition, the experimenter introduced the toys by “walking” the dolls (without bending the dolls at the waist or their legs) or by “driving” the trucks along the table. Touch patterns were analyzed by fitting a finite mixture model to the data (Thomas and Dahlin; 2001). Many individual infants were found to categories in multiple ways. We then tabulated the number of infants that could be described as categorizing by parts, by taxonomic category, or by both. In the Taxonomic condition 22 categorized taxonomically, 2 categorized by parts, and 1 categorized both. In the Partonomic condition, 2 categorized taxonomically, 10 categorized by parts, and 0 categorized both. Categorization strategy was contingent on the familiarization context (Chi-squared (2) = 21.0, p<. 0001). The distribution of categorizers in the Partonomic context differed from chance, Chi-squared (2) = 14.0, p<. 001), with most of these infants forming categories on the basis of parts. The distribution of categorizers in the Taxonomic condition also differed from chance (Chi-squared (2) = 29.4, p<. 0001), with most of these infants forming categories on the basis of taxonomic information.

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