Effects of preference and reinforcer variation on within-session patterns of responding.
Rotate in 2–3 moderately preferred edibles mid-session to revive responding, then go back to the top item.
01Research in Context
What this study did
The team watched autistic learners work for reinforcers during long sessions.
They compared one top item against a rotating pair of mid-level items.
The goal was to see how variety, not just preference, changes minute-by-minute responding.
What they found
The single favorite item kept the highest total responses.
Yet adding two or three mid-preferred items mid-session gave a quick jump in responding.
The boost came after the first few minutes, when the top item started to lose its sparkle.
How this fits with other research
Smith et al. (1997) showed that half of learners actually pick varied lower-quality items over one top item.
The new study extends that idea: even if the top item wins overall, a short mix still re-energizes the room.
Butler et al. (2021) add that edible preferences stay stable for months, so you can safely rotate within the same food group without extra tests.
Matson et al. (1999) warn that food keeps beating toys even after lunch; sticking to edible variety is therefore the smarter move.
Why it matters
You can keep long table sessions fresh without extra prep.
Start with the learner’s top edible. After five minutes, swap in two mid-ranked edibles for two minutes, then return to the favorite.
You maintain the highest total work while stopping the mid-session slump.
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Join Free →During your next long table session, present the top edible for the first five minutes, then pair it with two lower-ranked edibles for two minutes, then drop the extras and keep rolling.
02At a glance
03Original abstract
We examined correspondence between preference assessment outcome and within-session patterns of responding in one subject with autism. Responding maintained by a single highly preferred item resulted in a greater total number of responses, a slower decline in within-session response rates, and a greater proportion of short interresponse times compared to responding maintained by varied moderately preferred (MP) stimuli. Presenting varied MP stimuli within the same session produced greater levels and more sustained responding than presenting those same stimuli individually.
Journal of applied behavior analysis, 2012 · doi:10.1901/jaba.2012.45-637