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Peer reviewedMirenda, Pat; Locke, Peggy A. – Journal of Speech and Hearing Disorders, 1989
The investigation compared the transparency of 11 different types of symbols with 40 nonspeaking mentally retarded subjects (ages 4-20). Analysis indicated a hierarchy of difficulty with actual objects the easiest and Blissymbols and written words the hardest to understand. Results have implications for selecting initial symbol systems for…
Descriptors: Comprehension, Difficulty Level, Mental Retardation, Nonverbal Communication
Download full textCress, Cynthia J., Comp. – 1986
This bibliography provides citations to studies of word/letter frequencies and vocabulary applications based on issues of word frequency. While the original intent was to gather information pertinent to developing communication board vocabularies for argumentative communication systems, these resources should be useful for a variety of word…
Descriptors: Communication Aids (for Disabled), Difficulty Level, Disabilities, Letters (Alphabet)
