Executive Function Training for Children and Adolescents

Inclusion Criteria: * 12-17 years old. * Child must have a caregiver (parent/guardian) who is available to participate as a training aide. * Child and parent/caregiver are able to understand/speak adequate English or Spanish to follow and participate in study procedures * Both child and parent/guardian are willing to give informed consent/assent, be randomized to either intervention condition, and be willing to follow the assigned study protocol. * \~50% of the participants: Meet criteria for ADHD DSM-5 diagnosis. Exclusion Criteria: * Child is taking ADHD medication/stimulants. * Child has been formally identified as intellectually disabled. * Abnormal visual acuity or hearing challenges that are prohibitive to participating in the intervention/assessment. * History of organic mental disorders (conditions or disturbances that may be caused by injuries and/or neurodegenerative diseases affecting brain tissues), psychosis, history of autism spectrum disorders, intellectual disability, or active substance use or suicidal ideation (such individuals will be referred to psychiatric services). * Major sensory or motor impairment that would preclude valid cognitive testing. * Participants with color blindness, if they are unable to discriminate the task relevant stimuli. * Populations considered vulnerable such as wards and those with neurological or other health conditions that may prevent the ability to give informed consent.