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  • Title: Effects of time-compression on feature and frequency discrimination in aged listeners.
    Author: Rastatter M, Watson M, Strauss-Simmons D.
    Journal: Percept Mot Skills; 1989 Apr; 68(2):367-72. PubMed ID: 2717344.
    Abstract:
    This study measured the ability of 16 aged listeners, normal for their age (age range, 63 to 84 yr.) to discriminate phonemic contrasts in sentential stimuli (Subtest 13 of the Carrow-Auditory Visual Abilities Test) presented at 50% time-compression rate. A series of linear regression analyses were performed in which each independent variable was regressed against the continuous variable of age. Over-all performance on the time-compressed task significantly decreased as a function of age. Also discrimination of place of articulation and mid- to high-frequency contrasts was significantly and negatively related to age. In general, such findings suggest that the course of aging continuously imposes degrading effects on speech-processing that are related to discrimination of place feature contrasts.
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