Color Stroop Task
System Requirements
Minimum: 800×600
Recommended: 1280×800
May be challenging for colorblind participants
Description
A classic executive function task measuring inhibitory control by requiring participants to name the ink color of color words while ignoring the semantic meaning of the word itself.
About This Test
Participants see color words (red, blue, green, yellow) printed in colored ink and must respond with the ink color using keyboard keys 1-4, ignoring the word meaning. The task includes three conditions: (1) congruent trials where word and color match (e.g., 'red' in red ink), (2) incongruent trials where they mismatch (e.g., 'red' in blue ink), and (3) neutral trials with non-color words. The task consists of practice trials with feedback, followed by two test blocks with no feedback. Optional vocal response mode is available but requires manual scoring.
Test Details
stroop-colorcolor-stroop.pbl🚀 Try Without Registration
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Scientific Background
Original Task References:
These references describe the original task that this PEBL implementation is based on.
- Stroop, J. R. (1935). Studies of interference in serial verbal reactions. Journal of Experimental Psychology, 18(6), 643-662.
- MacLeod, C. M. (1991). Half a century of research on the Stroop effect: An integrative review. Psychological Bulletin, 109(2), 163-203.
Data Output
Creates multiple data files: (1) colstroop-keyboard-<subnum>.csv with trial-by-trial data, (2) colstroop-keyboard-summary-<subnum>.txt with performance statistics, (3) colstroop-keyboard-pooled.csv combining all participants, and (4) colorstroop-sumall.csv with summary statistics.
About This Test
A classic executive function task measuring inhibitory control by requiring participants to name the ink color of color words while ignoring the semantic meaning of the word itself.
Category: Executive Function
Estimated Duration: 10 minutes
Available Translations: 8 languages
Documentation Sources:
Test description file, Test implementation, Parameter schema
Documentation Status: Complete