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Journal of Speech and Hearing Research Vol.33 717-725 December 1990.
© American Speech-Language-Hearing Association
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The Comparative Translucency of Initial Lexical Items Represented in Five Graphic Symbol Systems and Sets

Karen Bloomberg 1
George R. Karlan 2

Lyle L. Lloyd 2
1 Severe Communication Impairment Outreach Project, Spastic Society of Victoria, Australia
2 Special Education, Purdue University

The comparative translucency within and across five aided augmentative and alternative symbol systems or sets (Blissymbols, Picsyms, PIC, PCS, and Rebus) for symbols representing three parts of speech (nouns, verbs, and modifiers) was investigated. A sample of 41 items representing an initial lexicon was rated by undergraduate college students on a 7-point scale of iconicity. Results indicate that translucency varies among systems or sets and among parts of speech. Rebus and PCS were the most translucent overall; however, a number of Blissymbolics, Picsyms, and PIC symbols were also rated as highly translucent. Caution is indicated in extrapolating results to young or retarded learners because of the influence of normal adult knowledge and experience on translucency ratings. Care must also be taken in extrapolating to more advanced lexicons containing larger, more developmentally advanced vocabularies.

KEY WORDS: augmentative and alternative communication, aided symbols, comparative iconicity, initial lexicon, iconicity

Submitted on July 25, 1988
Accepted on April 24, 1990


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