Incidental teaching is a naturalistic ABA teaching approach that uses the learner's own spontaneous initiations as the starting point for teaching opportunities. It was developed specifically to address one of the most common limitations of structured teaching approaches: the tendency for skills learned in structured settings to fail to appear in natural, everyday contexts.
Understanding what incidental teaching is, how it differs from related naturalistic approaches, and when it is most useful, is practical clinical knowledge for ABA therapists at every stage of their career.
What Makes Teaching Incidental
In incidental teaching, the teaching opportunity arises from the child's own behaviour rather than from an instruction or prompt delivered by the therapist. The child initiates, showing interest in something, reaching for an object, looking toward a preferred activity, approaching the therapist with an interest in interaction. The therapist uses that initiation as the occasion for a teaching trial.
The word incidental does not mean unplanned or casual. The environment is deliberately arranged to make initiations likely. Preferred items are placed in view but out of reach. Interesting materials are positioned to attract the child's attention. Opportunities for the child to want something that requires communication to access are engineered throughout the session.
What is incidental is the specific timing and content of the teaching opportunity, which is determined by what the child does rather than by a predetermined sequence of trials.
How Incidental Teaching Differs From Other Naturalistic Approaches
Incidental teaching and other naturalistic ABA approaches, including natural environment teaching and milieu teaching, share several features. All embed teaching in natural contexts, use natural reinforcers, and follow the learner's motivation. The key distinction in incidental teaching is the specific emphasis on the child's initiation as the trigger for the teaching opportunity.
In discrete trial teaching, the therapist initiates every trial. In incidental teaching, the child initiates and the therapist responds to that initiation by creating a teaching opportunity within it.
This distinction matters clinically because it builds a specific type of communicative behaviour: spontaneous initiation. Children who learn to communicate primarily in response to adult prompts and instructions may not develop the spontaneous initiation that characterises functional communication in everyday life. Incidental teaching specifically targets and reinforces initiation, which is one of the reasons it produces strong outcomes for communication development.
The Steps of Incidental Teaching
When the child shows interest in something, approaches the therapist, or reaches toward a preferred item, the therapist follows these steps.
First, arrange the environment to create an opportunity for communication by ensuring the desired item or activity is not immediately accessible without communication.
Second, wait. Give the child time to initiate a communication attempt without prompting.
Third, if the child initiates any communicative attempt, even a partial or approximate one, elaborate on it with a more complete model of the target form and then provide access to the desired item or activity as the natural reinforcer.
Fourth, if the child does not initiate after a reasonable wait, provide the least intrusive prompt that produces a communicative attempt, elaborate on the response, and provide reinforcement.
The natural reinforcer is always access to the thing the child was trying to get. This is what makes incidental teaching different from reinforcing a correct response with an unrelated reward. The consequence is the natural outcome of the communication.
When Incidental Teaching Is Most Useful
Incidental teaching is particularly useful for building spontaneous expressive communication in children who already have some communicative behaviour but who use communication primarily in response to adult prompts rather than spontaneously.
It is also highly effective for generalising communication skills across natural settings and communication partners, precisely because it is embedded in natural contexts rather than practised in structured sessions.
It is less useful for teaching skills that the child has no current motivation to initiate toward, or for teaching discrimination skills that require the controlled conditions of discrete trial teaching to establish initially.
Most comprehensive ABA programmes use incidental teaching alongside discrete trial teaching, using the structured approach to establish new skills and the naturalistic approach to generalise and build spontaneous use.
How NeuroCore Uses Incidental Teaching
At NeuroCore, incidental teaching is a standard component of our in-home ABA programmes. The home environment, with its natural array of motivating activities, routines, and materials, is an ideal context for incidental teaching because the opportunities for genuine child-initiated communication are plentiful and natural.
Visit our IBT and ABAT Training page to learn more or enrol now and find out when our next live sessions are scheduled.
