Cognition Laboratory Experiments

John H. Krantz, Hanover College,






Mental Imagery


Decision Making


Statistical Concepts

Hanover College
Psychology Department

Instructions for the
Dual Task Experiment

In this experiment, you can experience a mirror tracing task. 

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
Number of Trials The number of times the maze is run (from 1 to 20)
Type of Maze The maze type either a star or a square (Box) at present time.
Maze Track Diameter The width of the area that the participant must state in. (from 10 to 150 pixels).
Rotation of Maze The tilt of the maze from upright (from -45 to 45 deg).
Size of the dot The size of the dot that is moved through the maze (from 1 to 20 pixels)
Show the Tracking Path If yes, the participant will see a line representing their entire journey.
Give Tracking Feeback If yes, as the participant enters regions that must be entered in the maze will be highlighted as they enter. There is an order that these regions must be entered.

After you have finished making your settings, press the Done button at the bottom of the screen.  The Mirror Tracing experiment screen will then be presented.  A start bar will be at the top of the screen at every trial and instructions for that trial will be in the center of the screen. 

Press the space bar to begin the trial.  To move the dot on the screen, drag your mouse. You must go through the maze in a clock-wise direction. If you run to an edge that you cannot observe, move, but do not drag the mouse to give you more room to move your cursor. You must try to stay within the maze and go through each corner of the maze inside the maze in order going clockwise around the maze. When you are done, the screen will let you know.


At the end of the experiment your results will be presented.   You can get your responses for each trial by clicking on the Trial Data button at the bottom of the screen.

Click here to start the experiment.