Function of Behavior Categories in Autistic Children
When an autistic child exhibits a new behavior, the function of that behavior falls under 4 categories.
The Four Functional Categories
Based on applied behavior analysis (ABA) principles used in autism behavioral assessment and intervention, behaviors serve one of four primary functions:
- Attention-seeking - The behavior is maintained by obtaining social attention from others
- Escape/Avoidance - The behavior allows the child to avoid or escape from demands, tasks, or aversive situations
- Access to tangibles - The behavior results in obtaining desired objects, activities, or sensory experiences
- Automatic/Sensory reinforcement - The behavior is self-reinforcing through internal sensory stimulation
Clinical Application
Functional assessment is essential before implementing any behavioral intervention 1. The assessment process involves:
- Functional interviews with caregivers to identify antecedents and consequences
- Direct observation of the behavior in natural settings to document patterns
- Hypothesis formation about which of the four functions maintains the behavior
Research demonstrates that identifying the correct function is critical for intervention success 1. For example, in mealtime difficulties, acceptance and disruptive behaviors may be maintained by different contingencies - one child's food refusal might serve an escape function (avoiding non-preferred foods), while another's might serve an attention function (obtaining caregiver interaction).
Important Caveats
- A single behavior can serve multiple functions simultaneously or different functions in different contexts
- The same topography of behavior (e.g., screaming) can serve different functions across different children
- Intervention must match the identified function - an escape-maintained behavior requires different strategies than an attention-maintained behavior
- Functional assessment should be conducted in natural environments using familiar caregivers when possible, as this yields the most ecologically valid results 1
The range of behavioral difficulties in ASD is broad and includes hyperactivity, self-injury, aggression, stereotypies, and affective symptoms 2. However, regardless of the behavior's appearance, understanding its function through these four categories guides effective, individualized intervention planning.