ABA Fundamentals

Experimental evaluation of matching via a commercially available basketball video game

Schenk et al. (2020) · Journal of Applied Behavior Analysis 2020
★ The Verdict

Six out of nine players naturally matched their shot choices to the hidden point payoffs in a basketball video game, showing the matching law works with human gamers.

✓ Read this if BCBAs who use point or token economies in clinic or classroom settings
✗ Skip if Practitioners working solely on skill acquisition with no reinforcement ratios

01Research in Context

01

What this study did

Nine college students played a basketball video game for 30 minutes. The game paid 2 or 3 points per shot on random-ratio schedules the researchers secretly set.

Each player finished five conditions. The ratio of 2-point to 3-point payoffs changed every time. The team logged every shot the kids took.

02

What they found

Six of the nine players picked shots that matched the payoff odds almost perfectly. When 3-pointers paid off twice as often, those players hoisted more threes.

The other three kids showed no clear pattern. Their choices did not track the hidden odds.

03

How this fits with other research

GRADARDANO et al. (1964) saw the same thing in pigeons 56 years earlier. Birds pecked keys on matching random-ratio schedules and their response ratios lined up with payoff ratios. The new study shows the law holds for humans in a video game.

Laposa et al. (2017) found matching in grocery shopping. Higher-income shoppers picked brands that gave more reinforcement per dollar. Schenk et al. (2020) swap shopping aisles for a digital court and still see the same math.

Frank-Crawford et al. (2018) warn that preference can break down when work gets hard. They saw kids drop preferred toys once the task cost rose. Schenk’s gamers only had to press a button, so effort stayed low—maybe why matching stayed tight.

04

Why it matters

If you run a token economy or point system, check whether the pay rates kids face match the behavior you want. A 3:1 point ratio for on-task vs off-task behavior could pull choices toward the higher payoff just like those 3-pointers did. Try logging the exact ratio you deliver and graph it against the client’s response split—if they are not matching, tweak the odds first before you add more prompts or rules.

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→ Action — try this Monday

Count how many points each behavior earns this week, then graph client response ratios against those payoff ratios to see if they match.

02At a glance

Intervention
other
Design
single case other
Sample size
9
Population
neurotypical
Finding
positive

03Original abstract

Many recent nonlaboratory-based quantitative analyses of behavior have relied on archival competitive sporting data. However, the ratio-based reinforcement schedules in most athletic competitions and the correlational nature of archival data analyses raise concern over the contributions of such findings to the behavior analytic literature. The current experiment evaluated whether matching in a human operant paradigm would approximate matching observed in nonlaboratory-based sports data. To this end, we used in-game attributes to parametrically manipulate 2- and 3-point shooting in a commercially available basketball video game. The behavior of 6 of 9 participants conformed to the generalized matching equation. These results suggest matching in sporting contexts may be a product of restricted nonindependent concurrent random-ratio schedules. Implications of this experiment, including those in applied behavior analysis and potential influence on gamification, are discussed.

Journal of Applied Behavior Analysis, 2020 · doi:10.1002/jaba.551