“…Five of the single-case design studies tested single procedures (i.e., Brown et al, 1974;Chorpita, Albano, Heimberg, & Barlow, 1996;Hagopian & Slifer, 1993;Houlihan & Jones, 1989;Kolko, Ayllon, & Torrence, 1987), and the remaining three studies tested a combination of procedures or an intervention ''package'' (see Table 1; i.e., Esveldt-Dawson et al, 1982;Gosschalk, 2004;Moffitt et al, 2003). In each of these eight studies, a single participant was targeted in the intervention (N 5 1), and across studies all youth showed improvements in school or classroom attendance relative to baseline.…”