Color Stroop Task
System Requirements
Minimum: 800×600
Recommended: 1280×800
May be challenging for colorblind participants
Description
Color-word Stroop task focusing on ink color naming while suppressing the prepotent word-reading response. Supports keyboard or audio response modes.
About This Test
Participants name the ink color of words while ignoring the word meaning. The task includes practice trials followed by two test blocks containing congruent (word and color match), incongruent (word and color mismatch), and neutral (non-color word) trials. In keyboard mode, participants press number keys (1-4) corresponding to colors. In audio mode, participants verbally state the color and responses can be scored in real-time with keyboard or coded later from saved audio files.
Test Details
stroop-colorcolor-stroop.pbl🚀 Try Without Registration
Run this test immediately without creating an account. Data stays in your browser.
Researcher Access Benefits
To save configurations, upload data, use translations, track completion, and manage studies, please log in or register for an account.
Data Output
Creates multiple data files depending on response mode: (1) colstroop-<responsetype>-<subnum>.csv with trial-by-trial data containing columns: subnum (participant code), responsecond (response condition: 'keyboard' or 'audio'), code (participant code), block (block identifier: 'Practice' or block number 1-2), trial (trial number), stimword (word presented), stimcolorid (ink color ID: 1-4), stimcolorname (ink color name), cond (trial condition: 'C'=congruent, 'I'=incongruent, 'N'=neutral), responded (whether response was made: 1=yes, 0=timeout), response (keyboard response 1-4 or -1 if audio mode without real-time scoring), correct (trial accuracy: 1=correct, 0=incorrect, -1=not scored), abstime (trial start time in ms), rt (response time in ms), randomerror (random error: 1=error not attributable to incongruency, 0=correct or congruence error), incong (incongruence error: 1=error matching word text, 0=correct or random error), speechduration (for audio mode: duration of speech in ms, 0 for keyboard), recordtime (total recording time in ms for audio mode); (2) colstroop-<responsetype>-summary-<subnum>.txt containing text summary with accuracy and RT statistics by condition; (3) colstroop-<responsetype>-pooled.csv with all trials pooled across participants. For audio mode, individual trial audio files may be saved as WAV files in data/<subnum>/ directory if saveAudio parameter is enabled.
Example Data
| subnum | responsecond | code | block | trial | stimword | stimcolorid | stimcolorname | cond | responded | response | correct | abstime | rt | randomerror | incong | speechduration | recordtime |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| test | keyboard | data/test/trial--10000- | Practice1 | -10000 | green | 4 | yellow | I | 1 | 4 | 1 | 9685 | 951 | 0 | 0 | 0 | 951 |
| test | keyboard | data/test/trial--9999- | Practice1 | -9999 | yellow | 4 | yellow | C | 1 | 4 | 1 | 12648 | 605 | 0 | 0 | 0 | 605 |
| test | keyboard | data/test/trial--9998- | Practice1 | -9998 | green | 3 | green | C | 1 | 1 | 0 | 15261 | 759 | 1 | 0 | 0 | 759 |
| test | keyboard | data/test/trial--9997- | Practice1 | -9997 | yellow | 3 | green | I | 1 | 3 | 1 | 18026 | 706 | 0 | 0 | 0 | 706 |
| test | keyboard | data/test/trial--9996- | Practice1 | -9996 | blue | 3 | green | I | 1 | 3 | 1 | 20738 | 645 | 0 | 0 | 0 | 645 |
| test | keyboard | data/test/trial--9995- | Practice1 | -9995 | red | 4 | yellow | I | 1 | 4 | 1 | 23391 | 1377 | 0 | 0 | 0 | 1377 |
| test | keyboard | data/test/trial--9994- | Practice1 | -9994 | blue | 2 | blue | C | 1 | 2 | 1 | 26773 | 803 | 0 | 0 | 0 | 803 |
| test | keyboard | data/test/trial--9993- | Practice1 | -9993 | and | 3 | green | N | 1 | 3 | 1 | 29584 | 1107 | 0 | 0 | 0 | 1107 |
| test | keyboard | data/test/trial--9992- | Practice1 | -9992 | red | 1 | red | C | 1 | 1 | 1 | 32699 | 675 | 0 | 0 | 0 | 675 |
Sample data showing typical output format. Actual values will vary by participant.
About This Test
Color-word Stroop task focusing on ink color naming while suppressing the prepotent word-reading response. Supports keyboard or audio response modes.
Category: Executive Function
Estimated Duration: 8 minutes
Available Translations: 8 languages
Documentation Sources:
Test description file, Test implementation, Parameter schema
Documentation Status: Complete