The 4 functions of behavior are Sensory, Escape, Attention, and Tangible (SEAT). Every behavior — from tantrums to self-injury to disruptive classroom behavior — is maintained by one or more of these functions. Identifying the correct function is essential for designing effective behavior intervention plans (BIPs). This concept is heavily tested on the RBT® exam.
Sensory (Automatic)
The behavior itself produces a reinforcing sensation. No other person needs to be involved — the body provides its own reinforcement.
Clinical Examples
- 1A child rocks back and forth because the vestibular input feels calming.
- 2A student hums during independent work because the sound is soothing.
- 3A toddler mouths objects because the oral stimulation is pleasurable.
🎯 Exam Tip: If the behavior occurs when the person is alone AND no consequence is delivered by others, sensory is likely the function.
Escape (Negative Reinforcement)
The behavior allows the person to avoid or terminate something they find unpleasant — a demand, a task, a person, or an environment.
Clinical Examples
- 1A student throws materials when given a math worksheet → the teacher removes the worksheet.
- 2A child screams at the dentist → the dentist stops the procedure temporarily.
- 3An employee calls in sick on presentation day → avoids public speaking.
🎯 Exam Tip: Look for a demand or aversive stimulus that is removed or postponed after the behavior occurs.
Attention (Social Positive Reinforcement)
The behavior produces a social response from others — eye contact, verbal reprimands, laughter, comfort, or any form of interaction.
Clinical Examples
- 1A child calls out in class → the teacher says "Please raise your hand" (attention delivered).
- 2A toddler fake-cries → the parent picks them up and comforts them.
- 3A student makes jokes during a lesson → peers laugh.
🎯 Exam Tip: Remember: even negative attention (scolding, reprimands) is still attention. If someone else reacts, attention may be the function.
Tangible (Access to Items/Activities)
The behavior results in access to a preferred item, food, or activity that the person wants but cannot currently access.
Clinical Examples
- 1A child tantrums in the checkout aisle → the parent buys the candy.
- 2A student grabs a peer's tablet → gains access to the game.
- 3A teenager slams doors → parents eventually give in and extend screen time.
🎯 Exam Tip: If the behavior occurs right after access to an item is restricted or denied, tangible is likely the function.
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