Single-case experimental designs (SCEDs) are frequently used to evaluate whether a functional relation exists between interventions and student outcomes. A critical factor in decision making is the evaluation of graphical data, typically displayed in time-series graphs. Distortion in the graphical display of data can lead to invalid decisions on…

Researchers sometimes conduct a study and find that the predicted relation between variables did not exist or that the intervention did not have a positive impact on student outcomes; these are referred to as null findings because they fail to disconfirm the null hypothesis. Rather than consider such studies as failures and disregard the null…

Studies (N=168) describing the use of behavioral interventions with behavior-disordered students were analyzed in terms of their reporting on four classes of marker variables: descriptive, substantive, topical, and background. Data showed that more thorough descriptions of research populations are required in the areas of selection criteria,…

Colleagues in the field of mental health have made considerable progress developing inventories of evidence-based practice; however, the field of special education for children with emotional or behavioral disorders has only recently begun to do so. This paper provides some personal reflections on four major issues for consideration as we pursue…

Discusses logic and interpretation problems inherent in doing quantitative syntheses of single-case research. Addresses the meta-analytic method of using percentage of nonoverlapping data, highlighting special concerns related to withdrawal designs, sensitivity to variability in behavior, social significance of behavior change, and variables that…

In this discussion of quantitative research synthesis, past criticisms of meta-analysis are reviewed along with the ways they have been addressed. Objections to single-subject synthesis methods are discussed, along with the advantages of using the percentage-of- nonoverlapping-data metric. The article concludes by questioning the veracity of…

A winner of the Council for Exceptional Children Research Award reflects on the enabling effect of a supportive context for research, lessons learned relating to career successes and failures, and the value of applied research. The need develop a program of long-term research is discussed. (Contains references.) (CR)