Only six of 74 linguistic variables studied were affected by age when younger and older subjects were compared. Three of these variables related to pragmatics, two to semantics, and one to syntax. No differences were noted for the parameter of phonology.
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References
1.
PierceM. B. (1989) Investigation of language characteristics in normal aging. Unpublished master's thesis, Univer. of Arkansas for Medical Sciences, Little Rock, AR.
