Single-Subject Experimental Paradigm as a Clinical Decision Tool

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Abstract
The single-subject experimental paradigm, a research paradigm, can also be a powerful decision-making tool in clinical evaluation. To support this thesis, a brief review of the single-subject paradigm is presented, including a discussion of its 1) place in the continuum of methods to develop knowledge, 2) essential characteristics, 3) similarities to the therapeutic process, 4) validity, and 5) generality of findings. Usefulness of designs in this paradigm is illustrated with examples from the physical therapy literature, the ABA and the multiple-baseline designs. Also illustrated is the precision of information gained through individual data analysis. The single-subject experimental paradigm (intensive study of individuals) has much to offer physical therapy as a clinical research tool. I propose also that it has great potential as a tool for clinicians in evaluating effectiveness of treatments. The intensive study of individuals has a long and honored tradition of contributions to knowledge.

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