Visual overselectivity: a comparison of two instructional remediation procedures with autistic children.

The team worked with autistic children who focused on only one part of a picture. This is called visual overselectivity.

Kids got one of three teaching plans. Some learned through four-step equivalence training. Others practiced using real objects. The rest just repeated the task.

After training, all children took the same post-test to see if they noticed more parts of the picture.

Equivalence training won. Children who got the four-step plan scored higher on the post-test.

Repeated practice helped a little, but not as much. Functional object-use landed in the middle.

Shawler et al. (2023) looked at 40 years of equivalence studies. They say we still mix the recipe too many ways. Billings et al. (1985) is one of the first good results in that long line.

Wilson et al. (2023) used the same method with a young adult. They taught job names and duties. The learner mastered all relations after only half were taught. The 1985 child study and the 2023 adult study both show the power of equivalence training.

Gomes-Ng et al. (2025) seems to disagree. They found that extinction, not equivalence training, reduced overselectivity in neurotypical adults. The key difference is population and tool. Extinction weakens the strong cue. Equivalence training builds new links. Both can work, but in different people and with different goals.

If a student with autism only looks at one corner of a worksheet, try the four-step shift. Teach them to match the corner to the center, then to a new picture, then to a word, then back to the full page. This chain widens what they notice. One week of equivalence drills can replace months of simple repetition.