When It Fits
Use this assessment when a client can make two-option choices and a detailed comparison across candidate stimuli is needed.
Paired Stimulus Preference Assessment for ABA
Paired Stimulus Preference Assessment is an ABA direct preference assessment for practitioners. It helps a practitioner present two candidate stimuli per trial, record client choices across all pairwise comparisons, and review relative preference strength from selection counts or percentages.
Generate sample pairs and record demo choices.
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Tool guide
Learn more about this tool
Use this background section to understand when the tool fits, how practitioners use it, and what to consider before sharing it with clients.
Partial Results
Incomplete assessments show completed and missing pairs rather than forcing a full hierarchy.
Does every item need to be paired with every other item?
Yes. The paired stimulus mechanic depends on comparing each candidate stimulus with every other relevant stimulus.
Does the tool prove an item is an effective reinforcer?
No. It identifies preference strength from choices and likely reinforcer candidates for practitioner consideration.
Can side bias be reviewed?
Yes. When side/location tracking is enabled, the result may expose possible side or position patterns without making unsupported conclusions.