Shortened task length is a straightforward modification: you take a large, overwhelming task and make it smaller. Instead of a worksheet with twenty math problems, you cut it in half or fold it so only five problems are visible.

You use this strategy when the sheer volume of work triggers escape behaviour. Many learners look at a full page and immediately escalate because the effort required seems impossible. By presenting smaller chunks, you reduce the perceived effort and make the task look achievable. The learner still completes the work, just in smaller, more frequent bursts.

Practitioners often make the mistake of shortening the task but not increasing the frequency of reinforcement. If they do five problems instead of twenty, they need to access reinforcement after those five problems, not wait until the entire original block of time is over. Another error is showing the learner the whole task first, then taking it away to shorten it. The initial presentation of the overwhelming task is often enough to trigger the behaviour.

Implementation

Determine the maximum amount of work the learner can typically complete without problem behaviour.

Prepare the task so it only displays that manageable amount of work.

Present the shortened task to the learner.

Provide reinforcement immediately upon completion of the shortened task.

Gradually increase the task length over time as the learner's tolerance builds.

Implementation

Common Mistakes