You signed the consent forms, but your child did not. For most young children, that is how therapy works: parents give consent. Assent-based ABA adds a second layer. It asks, moment to moment, whether your child is willing to take part, and it changes what happens when the answer is "no." This guide explains what assent means, what it looks like in a session, and how to tell whether a provider practices it.
What is assent, and how is it different from consent?
Consent is a formal, informed agreement to services. For a child, a parent or legal guardian gives it, usually in writing, after the provider explains the plan, risks and alternatives.
Assent is the child's own willingness to take part. The BACB Ethics Code defines it as "vocal or nonvocal verbal behavior that can be taken to indicate willingness to participate in research or behavioral services by individuals who cannot provide informed consent (e.g., because of age or intellectual impairments)." Code 2.11 says behavior analysts "are responsible for obtaining assent from clients when applicable."
The key idea is that a child does not need words to give or withdraw assent. Approaching, smiling and reaching for materials can signal "yes." Turning away, pushing items off the table, crying or leaving can signal "no."
What is assent withdrawal?
Assent withdrawal is when a child shows, in words or behavior, that they do not want to continue. In an assent-based program, the team treats that as information. Typical responses:
- Pause the task and offer a break.
- Offer a choice: a different activity, a different order, or an easier version.
- Check whether something is wrong: hunger, pain, noise, fatigue.
- Make the activity more motivating, then invite the child back rather than forcing a return.
- Record it and look at patterns, so the plan can change.
Assent-based practice does not mean the child never does anything hard. It means hard things are made easier, more meaningful and more motivating, rather than forced. Safety is the main exception: if a child runs toward a road or a pool, staff act to keep them safe, using the least intrusive way possible.
Assent-based vs compliance-based ABA: how do they compare?
| Situation | Compliance-based approach | Assent-based approach |
|---|---|---|
| Child pushes materials away | Treated as escape behavior; task continues until the child complies | Treated as "no"; staff pause, offer a break or a choice, then adjust |
| Child cries during a task | Staff "wait it out" so crying is not reinforced | Staff comfort, lower demands, and look for the cause |
| Setting the session | Adult chooses the activities and order | Child has real choices; activities built around interests and play |
| Teaching "no" | Refusal is something to reduce | Saying "no" or "break" is a skill to teach and honor |
| Physical guidance | Used often to complete tasks | Minimal, explained, and stopped if the child resists, except for safety |
| Measuring success | Goals met | Goals met, and the child is happy, relaxed and engaged |
The difference matters beyond comfort. A child who learns that "no" works when said calmly gains a safe way to communicate and protect themselves. That is one of the main concerns autistic advocates raise about compliance-focused programs. See is ABA therapy harmful for the wider debate.
What does assent look like in a real session?
Here is an example of how a short part of a session might go in an assent-based program. It is an illustration, not a script for every child.
- The RBT sets out two activities the child likes and lets the child pick.
- Learning targets, such as asking for a toy or naming colors, are built into the game.
- After a few minutes the child starts looking away and pushes a card back. The RBT says, "Looks like you need a break," and points to the break card.
- The child takes the break card. That is a successful request, so the RBT praises it and gives the break.
- After the break, the RBT offers something new, perhaps bubbles, and the child comes back to the table on their own.
- The RBT notes when the child asked for the break, so the BCBA can see whether tasks are too long or too hard.
Over time, the child learns that asking works, so pushing, hitting or running are needed less.
How do I know whether a provider is really assent-based?
Many providers use the word. Ask questions that reveal what actually happens:
- "What does your team do when my child says no, cries, or walks away?"
- "How do you teach my child to ask for a break or to refuse?"
- "When do you use physical guidance, and what happens if my child resists it?"
- "Do you use restraint? What is your written safety policy?"
- "How do you track my child's happiness and engagement, not just goal data?"
- "How will my child have a say in their goals as they get older?"
- "Can I watch a session?"
Then watch. Assent-based sessions usually look like play, with laughter, choices and frequent breaks. Your child should generally be happy to go. If they often dread sessions, raise it with the BCBA. The red flags guide and the ABA center tour checklist can help.
Does assent-based ABA still make progress?
Assent-based practice still uses the core tools of ABA: assessment, reinforcement, measurable goals and data. The BACB Ethics Code also requires behavior analysts to "prioritize positive reinforcement procedures" and to use restrictive or punishment-based procedures only after less intrusive means have not worked or when risk of harm outweighs the risk of the procedure. Research comparing assent-based and compliance-based programs directly is still limited, so be cautious of any provider claiming it is proven to work faster. What it offers is a way of teaching that respects your child while they learn. Our guide on compassion-focused ABA and relationships explains why rapport matters so much.
What should I do at home to support assent?
Assent works best when home and sessions match. A few ideas parents often learn in parent training:
- Teach and honor a clear "break" signal at home too.
- Offer two acceptable choices instead of one demand ("shoes first or jacket first?").
- Notice early signs of stress, such as covering ears or going quiet, and step in before a meltdown.
- Praise your child for asking, even when the answer has to be "not yet."
Assent and older children and teens
As children grow, assent becomes more like a real say in the plan. Teens can help choose goals, decide which settings sessions happen in, and agree to stop or change. Parents or guardians still give the formal consent for a minor, but involving your child is good practice and part of the BACB Code's emphasis on involving clients in goal selection.
How Hope Center practices assent
Hope Center for Behavior Change is assent-based, trauma-informed and play-based. Tasks are presented in a fun, non-forceful way, and staff use calming support when a child is upset. We use the least intrusive, safest strategies and do not use restraint. In our clinical director's words, our centers are "full of laughing and singing, not crying." Parents are trained weekly, so you can use the same approach at home. Read our approach, or contact us at 561-337-8865 to ask how a session would look for your child.