What if Task Interspersal Slows ABA Learning?

Investigate why task interspersal slows learning

Compare equal and mature windows. Report new-skill responses per opportunity and per minute, maintenance effects, transition time, prompts, errors, client report, and exposure. Confirm that task pools and consequences stayed stable during the comparison.

Check switching and similarity

Frequent changes in materials, posture, response mode, partner, or sensory conditions can consume time and attention. Similar tasks can create confusion. A single maintenance task may also become tiring or lose accuracy through repetition.

Use the strongest counterexample

In the first experiment of the object-label study, constant teaching was similar to or better than similar and dissimilar interspersal for all participants. Later exploratory results varied with consequences. The provider survey also showed that common practice is inconsistent.

Reassess fit and access

The receptive-language paper identifies unresolved questions about interspersal design. The Ethics Code addresses assessment, medical needs, risk, and evaluation. ASHA supports continuous communication access during any comparison.

A practical example

Kai receives 12 new-skill opportunities in constant sessions and 6 in equal-length interspersal sessions. Accuracy is 7/12 and 4/6. The interspersal percentage is higher, yet it produces fewer correct new responses and longer transitions. The team reports both views before deciding.

Questions families can use

Are opportunity counts equal? What is learned per minute? Did switching add burden? Are tasks still maintained? Did consequences differ? Would constant, blocked, spaced, or naturalistic practice fit better?