This study evaluated whether an organization intervention was a mediator of change for grade point average (GPA) in a randomized clinical trial of a school-based treatment program for adolescents with attention deficit hyperactivity disorder (ADHD). A demographically diverse sample of 148 participants (105 males) with a diagnosis of ADHD were recruited from nine middle schools. Comprehensive diagnostic evaluations were completed and participants were randomized into one of three conditions (two active treatment conditions, one control condition) for a randomized clinical trial that lasted an entire school year. The results of the trial are reported elsewhere (Evans et al., 2016; Schultz et al., 2017); in this study we evaluated four of the criteria for determining mediation as reported by Kazdin (2007) to determine whether response to the organization intervention in this school-based treatment program mediated the relationship between dosage and GPA beyond previous GPA. The results provided evidence that response to the organization intervention mediated the relationship between intervention dosage and change in GPA.

本研究评估了在一项针对注意力缺陷多动障碍 (ADHD) 青少年的学校治疗计划的随机临床试验中，组织干预是否是平均绩点 (GPA) 变化的中介。从九所中学招募了 148 名被诊断为 ADHD 的参与者（105 名男性）的人口统计多样化样本。完成了综合诊断评估，参与者被随机分配到三个条件中的一个（两个积极治疗条件，一个控制条件），用于持续整个学年的随机临床试验。试验结果在其他地方报告（Evans 等人，2016；Schultz 等人，2017）；在这项研究中，我们评估了 Kazdin (2007) 报告的四个确定中介的标准，以确定对这个以学校为基础的治疗计划中的组织干预的反应是否介导了剂量和 GPA 之间的关系，超过了以前的 GPA。结果提供了证据，表明对组织干预的反应介导了干预剂量与 GPA 变化之间的关系。