Effects of practice on the perception of dichotically presented stop-consonant–vowel syllables

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Abstract
Changes in human subjects'' performance on dichotic pairs of CV''s (consonant-vowels) were observed over an 8-wk period. Results were of practical significance in that certain performance characteristics remained invariant with practice or reach an asymptotic value after 300-400 trials. The results were also of theoretical interest in that unchanging patterns of response may reflect the operations of processes which are more "built-in" to the perceptual system, whereas changes in performance with practice may reflect the operation of more "plastic" processes responsible for phonetic feature decoding. Also emphasized is the importance of considering both the amount of practice and individual differences when interpreting some aspects of dichotic results.

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