ABA Fundamentals

Transformation of Hierarchical Multiply Controlled Verbal Relations in Children With Autism in a Game of I Spy

Paliliunas et al. (2022) · Behavior Analysis in Practice 2022
★ The Verdict

A short PEAK-based I Spy game teaches kids with autism to handle nested categories and produce new correct choices without extra training.

✓ Read this if BCBAs running early learner or verbal behavior programs who want faster hierarchical category lessons.
✗ Skip if Practitioners working on gross motor or self-care only.

01Research in Context

01

What this study did

Paliliunas et al. (2022) taught three kids with autism to play I Spy using tricky category rules. The game used PEAK-style lessons that move from big groups down to small ones.

Each child got short top-down training. Then they played I Spy with new items to see if the skill stuck.

02

What they found

All three kids learned the hierarchy and picked the right items during the game. They also showed new correct answers that no one had directly taught.

03

How this fits with other research

Noell et al. (2026) got the same result with table-top trials instead of a game. Both studies show brief equivalence training can build hierarchical classes and untaught responses.

Ming et al. (2018) used similar RFT drills and found class-inclusion gains in kids with and without autism. The 2022 paper adds a playful format that still works for autism.

Grannan et al. (2012) showed emergent intraverbals after tact plus match-to-sample. Paliliunas moves the emergent skill up one level: kids now emit correct choices based on nested category rules, not just list items.

04

Why it matters

You can swap long table-top drills for quick PEAK-style games and still grow complex categorical responding. Try building a short I Spy round with big-to-small hints during natural play. Track if the child picks untrained items that fit the same hierarchy. If it works, you just saved session time and made learning fun.

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→ Action — try this Monday

Start your next verbal session with a five-trial I Spy mini-game: say 'I spy something that is a VEHICLE and also a TOY,' then reinforce selection of the toy car to test hierarchical responding.

02At a glance

Intervention
stimulus equivalence training
Design
single case other
Sample size
3
Population
autism spectrum disorder
Finding
positive

03Original abstract

We evaluated the development of mutually entailed arbitrary hierarchical relations and associated transformations of stimulus function across 3 children with autism in a game of I Spy. Top-down hierarchical relational training was efficacious in establishing 4 relational categories (A) containing a total of 5 stimuli (B), where 3 of the stimuli were contained in 2 different categories. Following relational training, all participants demonstrated a transformation of function by identifying the stimuli when provided a multiple verbal stimulus with two category names during I Spy. The procedures were adapted from the PEAK Relational Training System.

Behavior Analysis in Practice, 2022 · doi:10.1007/s40617-019-00391-0