Picture naming, matching to sample, and head injury: a stimulus control analysis.

One adult with a head injury tried two kinds of matching-to-sample tasks.

In one task the pictures stayed on the screen. In the other task the pictures disappeared and the person had to remember them.

The researchers added a simple rule: before you touch the card, say out loud what you just saw.

When the adult named the sample picture aloud, delayed matching got better.

Without the naming step, errors jumped once the pictures were taken away.

Saying the name acted like a self-prompt that held the picture in mind.

Chou et al. (2010) and Halbur et al. (2021) also used matching-to-sample, but with kids with autism and sounds instead of pictures. All three studies show the same big idea: small changes to the sample matter.

Mulder et al. (2020) tweaked the questions asked during training and saw mixed results. Together these papers warn us: if you skip the naming step, you may think the learner can’t match, when the real problem is weak stimulus control.

Amaral et al. (2019) looked at attention and memory in Down syndrome. Their group data fit the single-case story here: stronger auditory short-term memory links to better language. Naming the sample may feed that memory loop.

If a client with brain injury or autism keeps failing delayed matching, first check whether they are saying the sample aloud. Adding a simple “Tell me what you saw” cue can turn failure into success in the same session. Try it before you re-teach the whole task.