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15 Sep 2007, 7:49 pm
As well, given that single studies typically lack the statistical power to detect small effects, many apparent inconsistencies can often be attributed to the chance fluctuations expected among studies with varying sample sizes (Rosenthal & DiMatteo, 2000).Hall's (1995) meta-analysis included 12 studies that appeared after Furby et al.'s (1989) narrative review. [read post]