Order of stimulus presentation influences children's acquisition in receptive identification tasks.

Four neurotypical boys practiced receptive identification. They heard a word, then saw three pictures. The task was to touch the picture that matched the word.

The team switched the order. In one condition the word came first, then the pictures. In the other condition the pictures came first, then the word. An alternating-treatments design tracked how many trials each boy needed to reach mastery.

All four boys reached mastery faster when the auditory sample came before the visual choices. Fewer trials were needed every time.

The sample-first order cut teaching time without extra effort or materials.

Vedora et al. (2019) tested two children with autism using the same comparison. Those kids learned faster when the pictures came first, the opposite of this study. The difference looks like a contradiction, but it lines up with population: neurotypical kids benefit from sample-first, kids with autism may benefit from comparison-first.

Cubicciotti et al. (2019) extended the question to three children with autism and added simultaneous and re-presentation conditions. Each child had a different best order, showing that individual fit matters more than a single rule.

Marcucella et al. (1978) showed that novelty can control preschoolers’ choices. Their early work reminds us to check what stimulus actually guides the response before we pick an order.

If you teach receptive ID to neurotypical preschoolers, start with the auditory sample, then show the pictures. You will likely save trials and hit mastery sooner. If you work with kids with autism, test both orders and track the data; one size does not fit all. Quick order tweaks cost nothing but can shave days off acquisition.