802). Once the pre-experimental questionnaire was completed, “participants were randomly assigned to one of two groups (control condition, experimental condition) and were tested in small groups, with an average of 6 individuals per group” (Jang, 2008 , p. 802). Study participants were seated in a manner to maintain their privacy, and they were not allowed to interact with other participants until the end of the study. During the study, two trained raters sat in the room with small groups of students and discreetly observed and rated participants for their attention, effort, and persistence after 10 and 20 minutes of activity." Johnson , 2009, pp...