“…Some studies have used qualitative or pretest -posttest designs without a control or comparison group to evaluate the effectiveness of PA-PYD programs in improving self-perceptions, social skills, and respect toward others (Anderson-Butcher, Riley, Amorose, Iachini, & Wade-Mdivanian, 2014;Fuller, Percy, Bruening, & Cotrufo, 2013;Ullrich-French, McDonough, & Smith, 2012). These studies go beyond correlational designs, but without a comparison group, it is possible that positive changes observed from pretest to posttest are attributable to developmental (e.g., cognitive or physical maturity) or environmental factors (e.g., skills learned in family or school contexts).…”