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Raised-Line Pictures, Blindness, and Tactile 'Beliefs': An Observational Case Study

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Title: Raised-Line Pictures, Blindness, and Tactile 'Beliefs': An Observational Case Study
Language: English
Authors: D'Angiulli, Amedeo
Source: Journal of Visual Impairment & Blindness. Mar 2007 101(3):172-177.
Availability: American Foundation for the Blind. 11 Penn Plaza Suite 300, New York, NY 10001. Tel: 800-232-5463; Tel: 212-502-7600; e-mail: afbinfo@afb.net; Web site: http://www.afb.org/store
Peer Reviewed: Y
Physical Description: PDF
Page Count: 6
Publication Date: 2007
Document Type: Journal Articles
Reports - Research
Descriptors: Identification, Blindness, Assistive Technology, Visual Aids, Case Studies, Males, Early Adolescents, Tactual Perception, Tactile Adaptation
ISSN: 0145-482X
Abstract: In this observational case study, a 13-year old boy, Carlo, who was born completely blind, was invited to explore and identify, a set of raised-line pictures without receiving feedback about the accuracy of his identification. He was then asked to explain, verbally or by drawing, why he believed that the names he suggested accurately identified the depicted objects. The study found that Carlo identified 62% of the target pictures. Most of his verbalizations contained descriptions of salient parts of possible object referents that fit the configuration of the raised lines. The findings of this case study support the notion that the identification of raised-line pictures is based on principles of the perception of the shape of objects, independent of tactile beliefs. These principles seem to overlap, at least partially, in vision and haptics. The findings, however, need to be replicated with a larger sample. (Contains 1 table and 3 figures.)
Abstractor: ERIC
Number of References: 7
Entry Date: 2007
Access URL: https://www.afb.org/afbpress/pubjvib.asp?DocID=jvib0103toc
Accession Number: EJ765542
Database: ERIC
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  Data: In this observational case study, a 13-year old boy, Carlo, who was born completely blind, was invited to explore and identify, a set of raised-line pictures without receiving feedback about the accuracy of his identification. He was then asked to explain, verbally or by drawing, why he believed that the names he suggested accurately identified the depicted objects. The study found that Carlo identified 62% of the target pictures. Most of his verbalizations contained descriptions of salient parts of possible object referents that fit the configuration of the raised lines. The findings of this case study support the notion that the identification of raised-line pictures is based on principles of the perception of the shape of objects, independent of tactile beliefs. These principles seem to overlap, at least partially, in vision and haptics. The findings, however, need to be replicated with a larger sample. (Contains 1 table and 3 figures.)
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