Delayed Matching to Sample (DMS) Task in PsychoPy

This is a simple PsychoPy script for running a Delayed Matching to Sample task.
Here’s how it works: you see a sample image for 5 seconds, wait 20 seconds, and then pick the matching image from two choices.

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What’s Included

• Loads images from a folder (supports PNG, JPG, BMP, and more).
• Pairs images by number order in filenames (e.g., 1.jpg with 2.jpg).
• Adjustable timings for sample, delay, and feedback.
• Logs results to CSV with accuracy and reaction times.
• Click-based interface with green/red feedback.

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How a Trial Goes

1. (Optional) Fixation dot appears.
2. Sample image is shown for 5s.
3. Wait for 20s.
4. Two images appear — one is the original, one is a foil.
5. Click the one you think is correct.
6. See feedback and move on to the next trial.

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Requirements

• PsychoPy
• Python 3.8+
• A folder of numbered images

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Enjoy experimenting, and feel free to tweak it for your needs!