In this experiment, you will first be asked to solve the following puzzle:
There are three vertical pegs on a board, which are named Tower A, Tower B, and Tower C from the left to the right. There are a number of disks of different size on one of the towers (the 'Source' Tower) with the configuration that each disk lies above the disk(s) bigger than it is.

Your TASK is to transfer those disks to another tower (the 'Goal' Tower, which is coloured blue) by moving one disk at a time to one of the towers other than the peg on which the disk lies, and by following the rules:

(a) You can not put a disk on any disk smaller than it is, and
(b) you can not move a disk on which another disk lies.

You goal is to transfer all disks on the Goal Tower IN AS FEW MOVES AS POSSIBLE. Thus, you should MINIMIZE the NUMBER OF MOVES on the NEXT trial. (Note: The experiment will last exactly 45 minutes.)

As the problem is presented on a computer, you will have to use the mouse to indicate which move you want to make (i.e., from and to which tower you want to transfer a disk).  You will now receive ONE PRACTICE TRIAL to familiarize yourself with the software interface.
  
