An analysis of speech perception test result: a comparison of using accuracy and d’
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Abstract
Signal Detection Theory (SDT) uses mathematical methods to analyze human decision quality. Some research on speech perception applies SDT to analyze speech perception test results. More precisely, some speech perception researchers use only d’ (a value calculated based on SDT) and some use only accuracy in their analysis. However, it is unknown if using only d’ and only accuracy lead to different research results. In the present study, speech perception test data from five research studies were used to calculate d’ and accuracy separately, and then compare results statistically. The data revealed that using either d’ or accuracy do not make significant differences in terms of inferential statistical analysis. A study involving a larger pool of people studied would improve reliability.
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