Knowledge of research protocols, principles and procedures; knowledge of aspects of clinical trials such as screening, interviewing; knowledge of experimental design, statistics, computer applications and data management; oral and written communication skills; ability to identify, produce, organize, evaluate and interpret data; knowledge of ethics and regulatory procedures (i.e. informed consent, IRB applications, data safety and monitoring plans). Assist in training new staff in recruiting, tracking, and assessing participants for enrollment and follow-up; making contact with legal guardians (for youth); maintaining communication with participants across various media (telephone, email, texts), including intervention engagement; and implementing clinical incident procedures and submitting reports as necessary.