An Assistant Behavioral Analyst (ABA) is a professional who supports Board-Certified Behavior Analysts (BCBAs) in assessing and implementing treatment plans for individuals with behavioral challenges, often those with autism or developmental disabilities. They work directly with clients, collect data on behaviors, and assist in modifying interventions based on progress. ABAs typically work in schools, clinics, or home settings under the supervision of a BCBA. Their goal is to improve clients' social, communication, and daily living skills through evidence-based practices.