Development of a Transdiagnostic Intervention for Adolescents at Risk for Serious Mental Illness

Inclusion Criteria: * Currently enrolled in 9th through 12th grade and between the ages of 14 and 19 * Endorsed at least one psychotic experience * Provided contact information * Have a parent or legal guardian who is able and willing to provide written informed consent (if under the age of 18) * Have a parent or legal guardian who is able and willing to participate in a parent session * Competent and willing to provide written informed assent (if under the age of 18) or consent (if age 18 or older) * Able to communicate in English Exclusion Criteria: * Currently prescribed psychotropic medication (not including medications for attention deficit/hyperactivity disorder), regardless of adherence * Currently obtaining psychotherapeutic intervention