BCBA-Led Practice · Evidence-Based ABA Therapy · Serving Houston & Surrounding Areas
The 4 Functions of Behavior in ABA Therapy
Understanding why a behavior happens is the foundation of ABA therapy. Every behavior serves one of four functions — and knowing the function is what allows your BCBA to create an effective, targeted plan.
Escape / Avoidance
The behavior happens to get away from something unpleasant.
Examples
- Tantruming when asked to do homework (escaping the task)
- Running away during transitions
- Crying to avoid the dentist
What it looks like
The behavior increases when demands are placed and decreases when demands are removed.
ABA Strategy
Teach the child to appropriately request a break, modify the task difficulty, use first-then boards.
Attention
The behavior happens to get attention from others (positive or negative).
Examples
- Acting out in class to get the teacher's attention
- Hitting a sibling so a parent comes over
- Making noises during quiet time
What it looks like
The behavior increases when attention follows and decreases when the child already has attention.
ABA Strategy
Provide frequent attention for appropriate behavior, teach the child to request attention appropriately, avoid giving attention for problem behavior when safe to do so.
Access to Tangibles
The behavior happens to get something the child wants.
Examples
- Screaming for a toy at the store
- Grabbing food from another child
- Tantruming for screen time
What it looks like
The behavior increases when the desired item follows and decreases when the child already has access.
ABA Strategy
Teach the child to ask (verbally, with pictures, or AAC), use visual schedules to show when items are available, reinforce appropriate requesting.
Sensory / Automatic
The behavior happens because it feels good or provides needed sensory input.
Examples
- Hand flapping, spinning, rocking
- Mouthing objects
- Humming
What it looks like
The behavior occurs regardless of what's happening around the child — it happens when they're alone too.
ABA Strategy
Provide alternative sensory input that meets the same need (sensory toys, movement breaks, fidgets). Only address sensory behaviors if they cause harm or significantly interfere with learning.
Why This Matters for Parents
Understanding function helps you respond effectively. A tantrum for escape needs a different response than a tantrum for attention. Your BCBA will conduct a Functional Behavior Assessment (FBA) to determine what's driving your child's behaviors and create a plan based on that understanding — not guesswork.
The ABC Pattern
When a challenging behavior occurs, ask yourself: What happened right before (Antecedent)? What happened right after (Consequence)? What did the child get or avoid? This ABC pattern will help you identify the function.
Get a Functional Behavior Assessment
Our BCBAs conduct thorough FBAs to identify the function of your child's behaviors and build an effective behavior intervention plan. Schedule a free consultation.