Changing Lives Through ABA Therapy from Passionate Autism Experts Empowering Children To Reach Their Fullest Potential. Magnolia Behavior Therapy provides Board-Certified Behavior Analysts (BCBAs) who supervises each child’s program. Our BCBA’s supervise our Seattle Behavior Technicians and collaborate with other professionals such as; Doctors, Speech Therapists, Occupational Therapists, Teachers, paraprofessionals and other school district personnel. From supervising an ABA therapy program to training school district personnel on implementing a customized positive behavior support plan, all of our BCBAs are experts in the field of Human Behavior. The methods we use include: detailed assessments, programmed intervention, daily data collection and data-based decision-making in order to achieve the desired results.