Cognition Laboratory Experiments

John H. Krantz, Hanover College,






Mental Imagery


Decision Making


Statistical Concepts

Hanover College
Psychology Department

Instructions for the Musical Stroop Experiment


When you click on the link below, you will be presented with the experiment setup screen.  On this screen will be the variables you can set to define your condition.  Here is a list of the variables and their settings

Variable Settings
  • Congruent Tunes (Musical notes and tune are the same)
  • Incongruent Tunes (Musical notes and tunes different)
Tunes to Use Click on the check boxes to have the tunes used in your experiment.
Respond to What? Whether the participant is to respond to the music on the screen or the tune being played. 
Number of Trials in Condition The number of trials that will be run, from 20 to 200.

After you have finished making your settings, press the Done button at the bottom of the screen.  The Musical Stroop experiment screen will then be presented.  Press the button at the top of the page or the space bar to begin the experiment.  When the trial begins, a musical scale with a short 4 measure tune will be displayed at the top of the screen and a tune will be played.  The participants task is to identify the tune displayed on the screen or the tune being played depending of the selection of Respond to What.  You can do this three ways:

  1. press the relevant button at the bottom of the screen.
  2. press the indicated keys a long the middle row of letters.
  3. press the indicated number for the tune.

When the response is made the scale is removed from the screen but the tune plays to completion.

At the end of the experiment, your results will be presented, both average reaction time and your accuracy.  You can also get your trial by trial results.  Closing your results window(s) will take you back to the setup window so you can run another experiment.

Click here to start the experiment.



  • The initial idea for this experiment was generated by Dani Divencentes, Melissa Poole, and Zach Reed