Segmentation of Manually Coded English: Problems in the mapping of English in the visual/gestural mode
Supalla, Samuel James
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Permalink
https://hdl.handle.net/2142/22080
Description
Title
Segmentation of Manually Coded English: Problems in the mapping of English in the visual/gestural mode
Author(s)
Supalla, Samuel James
Issue Date
1990
Doctoral Committee Chair(s)
Troike, Rudolph C.
Department of Study
Education
Discipline
Education
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Psychology, Developmental
Language, General
Language
eng
Abstract
This study investigates Manually Coded English (MCE) and whether the structure of a spoken language can be effectively translated literally, morpheme for morpheme, into a signed language. Moreover, it investigates whether there are further structural constraints specific to signed languages which create restrictions in their typology and learnability.
The notion of modality constraints specific to signed languages versus spoken languages is tested by examining whether linear affixation is a possible morphological process in natural signed languages. Signers and non-signers were presented constructed examples based on Signing Exact English (SEE 2) and on an unfamiliar sign system (New Zealand Sign Language) to determine possible innate perceptual biases in the identification of sign boundaries, and structural limitations on the formation of possible (recognizable) sign units.
Analysis of the test data reveals highly consistent perceptual biases across the subject groups for how a sign should begin or end. The results showed that linear affixation clearly exceeds the structural/perceptual limits of sign formation, and that non-linear affixation was found to fall perceptually within the limits of a simple sign. Thus the Modality-Constraints Model is introduced to explain why MCE has basic problems as a sign system and is inherently unlearnable, so that it cannot function as a natural language. This model sheds new light on the nature of true signed languages in general.
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