ously refines its methods. While action research is most often applied to qualitative studies, it is possible to utilize it within a quantitative design such as will be done in the proposed research.
Because this study is only quasi-experimental in nature identifying variables as "dependent" or "independent" is not appropriate (see: Best & Kahn, 2002) due to the lack of controls inherent to the time-series design. However, it can be noted that the primary variables of this study are: (1) teaching strategies operationalized as the specific strategies used in Greenspan's (1998) Floor Time intervention for autistic children; (2) aggressive behavior operationalized as children's scores on the Aggressive Behavior Checklist (Shapiro, 2000); and (3) teacher feedback operational
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