"Five roles are considered by which systematic, quantified field research can augment controlled laboratory experimentation in terms of increasing the validity of laboratory studies." Advocates that comparative psychologists should "take more initiative in designing, executing, and interpreting our experiments with regard to the natural history of…

After briefly reviewing the clinical outcome literature for both strategies, the article concludes with a discussion of the rehabilitative and preventive benefits that may be gained from a combination of the two techniques. (Author/AM)