Participants were 154 middle school students (mean age ¼ 12.14 years, SD ¼ 0.67, range ¼ 11e
13 years). Students were in grades 6 (29.2%) and 7 (70.8%) within an affluent district (district
median household income ¼ $94,339; state median household income ¼ $43,393). The majority
was male (53.9%) and Caucasian (79.9%).