Autism and Siblings: Helping Brothers and Sisters Understand ABA Therapy

The moment you got your child's autism diagnosis, your entire focus probably shifted to them. Therapy schedules, IEP meetings, insurance calls, behavior plans. It is all consuming, and necessarily so. Your child with autism needs intensive support.

But somewhere in the middle of all this, you glance over and see your other child playing quietly alone. They have not asked for anything in days. They seem fine, right?

Maybe not.

Siblings of kids with autism carry their own complex feelings. They are often confused, sometimes jealous, occasionally resentful, frequently worried, and almost always trying to be the easy kid. They watch their brother or sister get hours of one on one attention from therapists and parents. They see their family life revolve around meltdowns and therapy schedules. And often, nobody thinks to explain what is happening or ask how they feel about it.

If you have other kids at home while one child receives ABA therapy, this article is for you.

What Siblings Actually Notice

Kids are incredibly perceptive. Even if you have not explicitly talked about autism or ABA therapy, your other children have noticed major changes:

• Strangers coming to the house multiple times a week to work with their sibling
• Their brother or sister getting treats and prizes during therapy sessions
• Family outings cut short or cancelled because of a meltdown
• Parents being stressed, tired, or emotional
• Different rules applying to different kids
• Toys or spaces being off limits because they are used for therapy

When we do not explain what is happening, kids fill in the blanks themselves. And the stories they create are often scarier or more hurtful than the truth.

A six year old might think their sibling is sick or dying. A nine year old might think they did something to cause their brother's autism. A twelve year old might think their parents love their sibling more. These fears fester in silence.

The solution is simple but not always easy: talk to them.

How to Explain Autism to Different Ages

Preschool age (3 to 5 years old). Keep it very simple. "Emma's brain works differently than yours. She learns things in a different way, so Ms. Rachel comes to help teach her. You learned to talk easily, but Emma needs extra help. Everyone's brain is different."

Focus on concrete differences they can observe without judgment.

Early elementary (6 to 8 years old). You can introduce the word autism. "Remember how we talked about Emma's brain working differently? The word for that is autism. It means she needs help learning to communicate and play with other kids. That is what ABA therapy is. The therapists are teachers who help her learn."

At this age, kids understand fairness deeply. They might protest that their sibling gets special treatment. Acknowledge it. "I know it seems like Emma gets more attention and more treats. She does get extra help because she needs it. Just like when you broke your arm and needed extra help, we gave it to you. Everyone gets what they need, even if it looks different."

Tweens and teens (9 and older). They can handle more nuance. Explain what autism actually is. Talk about neurological differences, sensory processing, communication challenges. Let them ask questions. Share your own feelings when appropriate.

When Siblings Feel Jealous or Resentful

This is the part that makes parents feel guilty, but it needs to be said: your other kids will sometimes feel jealous. They might resent their sibling with autism. They might resent you. This is normal, and it does not make them bad kids.

Think about it from their perspective. Their sibling gets hours of one on one attention from fun adults who bring toys and give treats. Their sibling can break rules without major consequences. Family activities are chosen based on what their sibling can handle. When both kids need something at the same time, the child with autism usually gets priority.

That stings.

Do not dismiss these feelings. Do not say "Your brother can't help it" or "You should be grateful you don't have autism." Both of those statements, while maybe true, invalidate what the sibling is experiencing.

Instead, validate the feeling and address the need. "I hear you. You are frustrated that we had to leave the park early because of Jake's meltdown. You were having fun and you wanted to stay. I get why that feels unfair." Then, "What if we plan a special park trip just for you and me this weekend?"

Make sure siblings get their own one on one time with parents. It does not have to be hours. Even 20 minutes of undivided attention doing something they choose can refill their tank.

Including Siblings in ABA Therapy

Some ABA providers encourage sibling participation, especially for social skills targets. A typically developing sibling can be a fantastic practice partner for turn taking, sharing, conversation, and play skills.

Ask your BCBA if sibling involvement makes sense. If so, set it up carefully:

Make it voluntary. Do not force a sibling to participate in therapy. For some kids, it is fun and special. For others, it feels like a chore.

Prepare them first. Explain what will happen. Let them know they might get praised or earn rewards too.

Keep it brief and positive. Short, successful interactions are better than long, frustrating ones.

Do not make them the therapist. Siblings should get to be siblings. They can support goals during natural play, but they should not be responsible for implementing behavior plans or collecting data. That is too much pressure.

Protecting Siblings from Aggression

This is a hard topic, but it matters. If your child with autism engages in physical aggression, their siblings are often targets. Sometimes it is because siblings are around most often. Sometimes it is because the child with autism is frustrated and the sibling is nearby.

Regardless of why it happens, you need to protect your other kids. They should not have to live in fear of being hurt.

Work closely with your BCBA on safety plans. This might include:

• Teaching your child with autism alternative communication for when they are upset
• Creating separate spaces where siblings can go to be safe
• Teaching siblings how to create distance without engaging
• Closely supervising interactions until aggression decreases

And just as importantly, validate your other child's fear and anger. "I know it is scary when Ben hits you. You should not be hit. We are working really hard to teach Ben other ways to communicate. This is not okay, and we are going to keep you safe."

The Sibling Who Becomes a Helper

Many siblings of autistic kids naturally take on a helper or caretaker role. They learn to read their sibling's moods. They intervene before meltdowns. They translate for their sibling in social situations.

This can be beautiful. Siblings often develop incredible empathy, patience, and maturity beyond their years. But it can also be a burden.

Watch for signs that your typically developing child is taking on too much:

• Anxiety when they are not able to help their sibling
• Missing their own activities to help with their sibling
• Feeling responsible when their sibling has a hard time
• Becoming a third parent rather than a kid

If you see this pattern, gently pull them back. "I love that you care about your sister, but I am the parent. It is my job to help her, not yours. Your job is to be a kid."

Making Family Time Work

Family outings with a child in ABA therapy can be complicated. Sensory sensitivities, behavior challenges, and rigid routines make spontaneous fun difficult. Over time, families often stop trying.

But siblings need family memories too.

Plan carefully. Choose times and places that work for your child with autism. Go to the playground early in the morning when it is quiet.

Bring support. If possible, have two adults so one can handle a meltdown while the other stays with siblings.

Do sibling only outings too. Your child with autism might not be able to handle certain activities, but your other kids can. Take them separately. It is not excluding their sibling. It is meeting everyone's needs.

Create home traditions. If outings are too hard, create special traditions at home. Friday movie night with popcorn. Saturday morning pancakes. Sunday game time.

When to Get Professional Support for Siblings

Most siblings adjust over time, especially with support from parents. But some need professional help. Consider therapy for your other child if:

• They are showing signs of anxiety or depression
• Their school performance has dropped significantly
• They are acting out or becoming aggressive themselves
• They are isolating from friends and activities
• They express feeling invisible, unloved, or unimportant

Therapy for siblings is not admitting failure. It is giving them tools to process complex feelings. Some areas in Colorado have sibling support groups specifically for brothers and sisters of autistic kids.

What Siblings Wish Parents Knew

When we talk to adult siblings of autistic individuals, here is what they often say:

"I wish they had explained things to me sooner."

"I wish they had asked how I was doing."

"I wish they had made time just for me."

"I wish they had not expected me to always understand."

"I wish they had protected me from aggression sooner."

"I wish they had told me it was okay to have my own life."

"I wish they had said thank you."

The Unexpected Gifts

Living with a sibling with autism is hard. But it also builds character in remarkable ways. Siblings often develop deep empathy, patience and flexibility, advocacy skills and courage, maturity and perspective beyond their years, and understanding that everyone has challenges.

Your job as a parent is to make sure that relationship can flourish without sacrificing your typically developing child's wellbeing. It is a delicate balance, and you will not get it perfect. But with awareness, intentionality, and support, your whole family can thrive.