Monitoring for vowels in isolation and in a consonantal context

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Abstract
The identifiability of isolated vowels (/V/) was compared to that of vowels in consonantal context (/pVp/) when subjects performed a monitoring task. On successive blocks of trials in a test series, the subjects listened for instances of 1 or another of 9 monophthongal vowels .**GRAPHIC**. and identified each test item as being an instance or not. Resulting false alarm errors occurred significantly less often in the /pVp/ condition, consistent with the previous finding that vowel perception may be aided by consonantal context. The beneficial effect of context was found to be restricted to the class of open vowels; with perception of the close vowels being somewhat hindered by context. The error data for misses also showed an interaction between context and vowel height. Various accounts of the interaction are considered.

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