“…More favorable classroom findings might be expected from this type of treatment because evidence suggests that other types of generalization occur following Hanf model interventions. However, in contrast to findings that treatment effects generalize across time (e.g., Baum & Forehand, 1981;Forehand et al, Downloaded by [University of Glasgow] 1979;Webster-Stratton, 1984), to untreated siblings (Eyberg & Robinson, 1982;Humphreys, Forehand, McMahon, & Roberts, 1978), and from the clinic to the home setting (e.g., Boggs, 1990;Forehand & McMahon, 1981;Peed, Roberts, & Forehand, 1977), two controlled group studies of parent-child interaction have failed to support school generalization. Forehand et al (1979) found that five of eight treated children, in contrast to four of eight untreated controls, demonstrated more inappropriate classroom behavior after a Hanf model intervention.…”