“…Of 25 reviewed studies, 16 reported on interventions that utilized a group modality, and two reported on classroom-based interventions. Numerous outcome studies of interventions delivered to groups of participants were published in the past several years (see, e.g., Auslander, Haire-Joshu, Houston, Williams, & Krebill, 2000;McKay, Gonzales, Quintana, Kim, & Abdul-Adil, 1999;Mitchell, 1999;Pomeroy, Kiam, & Abel, 1999;Rice, 2001;Rotherman-Borus, Murphy, Fernandez, & Srinivasan, 1998). Children who are research participants are often clustered into schools or classrooms (Abbott et al, 1998;Spoth et al, 1998).…”