PROBLEMS IN LOGIC AND INTERPRETATION WITH QUANTITATIVE SYNTHESES OF SINGLE-CASE RESEARCH - MATHUR AND COLLEAGUES (1998) AS A CASE IN POINT

This article focuses attention on some of the logic and interpretation problems inherent in doing quantitative syntheses of single-case rese arch. Particular attention is given to the metaanalytic method of usin g percentage of nonoverlapping data, highlighting specific concerns re lated to withdrawal designs, sensitivity to variability in behavior, s ocial significance of behavior change, and understanding the complex m ultiple variables that influence intervention effectiveness. As a case in point, we critique the use of PND in an article by Mathur, Kavale, Quinn, Forness, and Rutherford (1998) recently published in Behaviora l Disorders.