Title

Measures of Clinical Significance

Document Type

Article

Publication Date

2003

Abstract

Behavioral scientists are interested in answering three basic questions when examining the relationships between variables (Kirk, 2001). First, is an observed result real or should it be attributed to chance (i.e., statistical significance)? Second, if the result is real, how large is it (i.e., effect size)? Third, is the result large enough to be meaningful and useful (i.e., clinical or practical significance)? In this last column in the series, we treat clinical significance as equivalent to practical significance.