Within- and Cross-Modal Integration and Attention in the Autism Spectrum.

Charbonneau et al. (2020) tested how well autistic adults combine sight and touch at the same moment.

They used simple flashes and taps while recording accuracy and speed.

The team also checked whether trouble switching attention explained any gaps.

Autistic people scored lower on merging the flash and tap into one event.

Their scores stayed low even when attention switching was ruled out.

The gap is real and not just a side effect of slower shifting.

David et al. (2011) saw intact cross-modal priming in adults with Asperger syndrome.

The two studies seem opposite, but Nicole used quick picture-word pairs while Geneviève used same-time touch-light pairs.

Different tasks and narrower diagnosis explain the clash, so multisensory problems are not universal across the spectrum.

Skripkauskaite et al. (2021) later showed autistic adults shift attention like peers when the screen goes blank first, backing the idea that shifting is not the root issue.

You can stop blaming poor attention switching when clients miss multisensory cues.

Instead, build extra sight-plus-touch prompts into teaching materials.

Use redundant signals and check that both channels are clear before expecting clients to bind them.