The Effectiveness of Cognitive-Functional Remote Group Intervention (Cog-Fun RG) for Adults with Attention Deficit Hyperactivity Disorder (ADHD)

The goal of this clinical trial is to examine the effectiveness of Cognitive-Functional Remote Group intervention (Cog-Fun RG). The main questions of this study are 1. will participants demonstrate improvements in their executive functioning and quality of life after receiving the intervention, compared to waitlist controls. In addition, the investigators will examine if the waitlist group will demonstrate similar gains in these outcomes after receiving the same intervention. the investigators will compare between the intervention group to the waiting list group to examine the effect of the intervention. The participants will be allocated into two groups: an intervention group and a waiting list group. The intervention group will receive the the Cog-Fun RG intervention, which includes 21 weekly group sessions, each lasting 90 minutes. the participants will be required to complete questionnaires at several time points: pre-post the intervention, as well as three months, six months, and one year after the intervention. The waiting list controls will be required to complete questionnaires at several time points: pre-post waiting period, and then after the intervention, as well as three months, six months, and one year after the intervention.