Parents of autistic and neurodivergent children frequently ask: Is this a sensory issue or a behaviour issue? It is indeed easy to misinterpret a child who puts their hands over their ears, refuses to wear certain clothes, runs around the room or throws an object away from time-to-time or rejects instruction. Behaviour that looks like “misbehaviour” may be a child’s nervous system responding to sensory overload. In the same way, not every behaviour relates to sensory processing — for example, some are due to learning challenges, motivation issues, communication difficulties and so forth. This is one of the most difficult things to understand about autism, because there is a huge overlap between the two.
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Experts say the right intervention depends on identifying the child’s underlying need. More than just a matter of mislabelling, treating a sensory challenge as a behaviour problem (or the other way around) can make it much more difficult to move forward with progress and increase frustrations for children and families alike.
Difference Between Sensory Issues and Behaviour Issues: Why One Matters More
Raqib Ali, M.Phil (Clinical Psychology), Consultant- Clinical Psychologist explains that understanding the reason behind the child’s behaviour is the first step towards its proper support. “We first need to know what are sensory issues and behavior issues. While they may seem similar, they do not always have the same cause,” he says.
What Are Sensory Issues?
Sensory issues are typically caused by poor processing of sensory inputs. Sensory processing is the most fundamental level in which the brain receives and assigns meaning to sensory information. The different types of information that our sensory organs are receiving constantly: smell (olfactory), vision (visual), hearing (auditory), balance (vestibular), body awareness (proprioceptive) internal body signals (interoceptive) and touch(tactile). That information on a sensory nerve goes to the brain and gets processed.
If there is an issue in the way brain processes this information—not in the sensory organs themselves or how signals travel—it can influence many higher functions. As described by A. Jean Ayres’ Sensory Integration Theory and other neuropsychological theories, these challenges can lead to challenges with ADLs (activities of daily living), coordination, over- or under-sensitivity to sensory input, and other functional difficulties. On occasion, they may look like behaviour problems when the true issue is sensory processing.
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What Are Behaviour Issues?
In contrast, behaviour problems are usually considered to come from having too much or too little of a certain type of behaviour. Influencing and maintaining these behaviours are a range of factors, including the child’s motivation, reinforcement offered for such behaviour (and the broader social environment), parenting practices, exposure to other learning experiences; that is what makes it challenging.
This is also true because many behaviour issues can mimic sensory issues, making it hard to decipher the difference.
What Makes Them So Hard to Differentiate?
Sensory issues and behaviour issues are not clearly delineated. Almost no behaviours, at least at a human level, can be attributed 100% to either alone. This overlap can bring some confusion to parents and therapists.
How can we as parents and therapists make the distinction?
Functional Behaviour Analysis: Functional Behavior Analysis (FBA) is an analysis where we are trying to figure out the function, or antecedent or probable cause of a behaviour. Parents are provided with a structured observation format and asked to accurately note the behaviour, the antecedents of that behaviour, and its consequences. If the information indicates that a sensory seeking or avoidance is the primary cause, then therapies can begin to address those underlying needs rather than just treating the behaviour.
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Response to Intervention: Response to Intervention (RTI) is another useful approach. Instead of trying to identify the exact cause first, therapists begin with the most appropriate and practical intervention and closely observe how the child responds. For example, if a sensory-based strategy—such as providing movement breaks or reducing noise—helps reduce the behaviour, it suggests that sensory processing may be a major contributing factor. If the behaviour improves more with behavioural techniques, such as positive reinforcement or changes in routine, it is more likely to have a behavioural basis. This approach helps therapists identify what works best for the child and avoid unnecessary delays in providing effective support.
The time that this method saves is invaluable, as therapists can home in on what interventions are actually working instead of wasting excessive effort trying to narrow down the exact cause first.
Comprehensive Assessment: This strategy gives a more complete picture of the child. This entails examining cognitive skills, social functioning, sensory processing, and behaviour based on relevant assessment instruments. When looking at all these areas you can ideally begin to see things in the context of the child’s relative strengths and challenges as opposed to very separate islands.
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A Developmental and Autism Perspective on Understanding the Child
It is also important to understand the child through an autism and developmental perspective. Each has its own brain, communication style and ability level, and sensory needs (or red flags for tantrums) help control their body and emotions. Keep in mind that not all sensory behaviours are abnormal, and they are often typical of certain stages of development and also help to provide critical sensory nourishment.
Parents and therapists must always take these developmental factors into consideration while helping the child.
