ABA Preference Assessment · Local data collection · Responsive for laptop, tablet, and mobile
1. Assessment Setup
MSWR rule: the selected stimulus stays in the array and remains available for later trials. Re-present the array after each choice, and rotate positions to reduce position bias.
Stimulus Items (default: Item A–H)
Images are selected from your device and processed locally in this browser.
2. Live Assessment
Not started
Complete the setup, then select Start Assessment.
Trial 1
Present the array and record one selection per valid choice trial.
Confirm selected stimulus
Engagement observation
00:30
Timer is a prompt only; record observed engagement separately.
If the learner reaches for multiple items, follow the established assessment protocol. This tool does not automatically mark the event incorrect.
3. Trial Data
You can edit or delete a saved trial; results recalculate automatically.
Trial #
Items Available
Item Selected
Position
Engagement (sec)
Engagement Observed
Notes
Action
4. Results & Summary
No data yet
Selection Frequency
Item Summary
Item
Selection Count
% of Valid Choice Trials
Mean Engagement (sec)
Last Selected Trial
Descriptive Category
Professional Assessment Report
Record trials to generate a data-based summary.
Privacy: this tool runs locally in your browser. It does not send learner information to a server. Exported files may contain sensitive learner information; store them securely. Preference results describe observed choices and do not independently establish reinforcer effectiveness.