In this task you need to respond to the ink colour of the word by pressing keys on the keyboard that correspond to the colours or by clicking on the coloured buttons.
When the ink colour of the word is red press on the red button or press the ‘b’ key on the keyboard. When the ink colour of the word is green press the green button or press the ’n’ key. When the ink colour of the word is blue press the blue button or the ‘m’ key. As soon as you have responded the fixation cross appears again and the next trial starts.
It is important to keep your eyes focused on the fixation cross. Respond as quickly as possible but also try not to make any errors. The task will take just few minutes to complete.
Press first on the Practise button to practise and then press on the Start button.
More information about the Stroop task can be found in these papers:
MacLeod, C. M. (1991). Half a century of research on the Stroop effect: an integrative review. Psychological bulletin, 109(2), 163.
Stroop, J. R. (1935). Studies of interference in serial verbal reactions. Journal of experimental psychology, 18(6), 643.
Please note that this task runs locally in your web browser, data is stored locally and no data is transferred across the internet.