FAQ: How can I keep track of trial response accuracy?

[SR-SUPPORT]

Monitoring response accuracy can be achieved by including an expected response value for each trial in the Data Source and comparing this to the participant's actual response during the trial. The Picture-Response Experiment Builder example in the Video Tutorials provides a step-by-step implementation.

In general:

1. Add a new column to the project's Data Source which contains the expected response for each trial (row).
   
2. Add a trigger (Keyboard, Mouse, Button box, invisible eye boundary, etc...) to your project to collect the participant's response.
   
3. Use a Conditional node to compare the trigger response value and the expected response value after the trigger node during the trial. Then based on the Conditional's evaluation use an Update Attribute to mark the trial's Accuracy Variable as either 0 (incorrect) or 1 (correct).