“…(p. 255) Traditional approaches of DA include assessment of learning potential (e.g., Budoff, 1987), testing-the-limits (Carlson & Wiedl, 1979), mediated assessment (e.g., Feuerstein, 1980), and assisted learning and transfer (e.g., Bransford, Delclos, Vye, Burns, & Hasselbring, 1987;Campione, Brown, Ferrara, Jones, & Steinberg, 1985). Although DA is a term used to characterize a number of distinct approaches (see Brown, Campione, Webber, & McGilly, 1992;Carlson & Wiedl, 1979;Haywood et al, 1990;Palincsar, Brown, & Campione, 1991;Speece, Cooper, & Kigler, 1990; for a review), two critical features are to determine the learner's potential for change when given assistance (e.g., see Campione & Brown, 1987) and to provide a prospective measure of performance change independent of assistance (Embretson, 1987).…”