“…In this study, a school-based meditation program was chosen as an intervention since the program was shown to have positive effects on these four variables in particular (anxiety, depression, impulsivity, and aggression). Yoo et al (2016) reported significant decreases in social anxiety, aggression, and salivary cortisol level (physiological indicator of stress) for elementary school 5 th graders when participating in a school-based meditation program utilizing mind subtraction meditation. Other studies using similar mind subtraction meditation programs in schools also reported significant improvements in the following: depression and anxiety for youth ; anxiety related to school, home, examination, societal, and situational stress in 5 th graders with documented high anxiety symptoms and complaints (Ahn, 2006); trait and state anxiety in middle school students (Choi, Lee, & Cheon, 2006); aggression in elementary and middle school students (Kim, Yoo, Lee, & Son, 2013); and self-control in elementary, middle, and high school students (Yoo, Yoon, Choi, & Kim, 2014).…”