Abstraction of tactile properties by individuals with autism and Down syndrome using a picture‐based communication system

Two children who used picture cards to talk learned to label how things feel. One child had autism, the other had Down syndrome.

Teachers ran short discrete-trial lessons. The kids saw an object, felt it, then touched the picture that said "wet," "dry," "hard," or "soft."

Both children learned the labels and used them with new objects they had never felt before. Two weeks later they still got it right.

Paranczak et al. (2024) and Zhirnova et al. (2025) show that typical kids can jump from simple drills to whole networks of new relations. The current study keeps the drill simple and shows it still works for kids with developmental delays who use pictures to talk.

Peterson et al. (2019) tried mixing up the model during DTT and found it slowed learning. Belisle stuck to one clear model and got clean acquisition, matching Peterson’s warning.

Bruns et al. (2004) showed that toddler’s need both listener and speaker training to categorize. Here, the picture cards acted as the speaker output, giving that missing tact step for kids who can’t talk.

If you work with non-speaking clients, you can teach abstract feel-words with plain DTT and picture cards. No need for fancy equivalence programs first. After mastery, toss in new objects to check generalization right away.