“…A select sample of that larger literature includes (a) verbal instruction or didactic training, in which a learner is instructed through verbal dialogue or written materials (e.g., Watson & Kramer, 1993), (b) modeling, in which a learner is instructed by viewing the proper implementation of the procedures (e.g., Iwata et al, 2000), (c) rehearsal, in which the learner participates in role-play of the procedures (e.g., Moore et al, 2002), or (d) feedback, in which a learner receives correction during or following practice (e.g., Noell, Witt, Gilbertson, Ranier, & Freeland, 1997). These techniques are used most often in the context of a package that consists of multiple components (e.g., Feldman et al, 1992;Greene, Kamps, Wyble, & Ellis, TRAINING PARENTS 1999;Isaacs, Embry, & Baer, 1982;Marcus, Swanson, & Vollmer, 2001;Petrie, Kratochwill, Bergan, & Nicholson, 1981;Salzberg & Villini, 1983). To date, few studies have evaluated individual components systematically to determine their effectiveness outside a multicomponent training package.…”