American International Journal of Social Science

Power and Effect Size Measures: A Census of Articles Published from 2009 -2012 in the Journal of Speech, Language, and Hearing Research
Manish K. Rami

Abstract
The purposes of this study were to report the use of power and effect sizes in articles in the Journal of Speech, Language, and Hearing Research (JSLHR). A census of all articles published between the years 2009 - 2012 (n = 436) in JSLHR was conducted to gather data about report of power and effect size. Over 97% (426/436) of the articles did not report power and over 42% (187/436) did not report any effect size measure. Articles not reporting power in each year in this census range from 96.5% to 98.9% and those not reporting any effect size ranges from 33% to 50% over a period of four years. The discipline would benefit from embracing higher standards and encouraging authors to report the measures of power and effect size in their articles.

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