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.  Initially, there are several disks of different size on one of the pegs (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 peg (the 'Target Tower', which is coloured BLUE) by MOVING ONE DISK AT A TIME to one of the towers other than the tower on which the disk lies, and by following the RULES:

(a) You CANNOT PUT A DISK ONTO A DISK that is SMALLER than itself, and 
(b) you CANNOT MOVE A DISK ON WHICH ANOTHER DISK LIES (i.e., you can only move the topmost disk of a tower).

As the problem is presented on a computer, you will have to use the mouse to move disks between towers.  

You can move disks between towers by using the mouse cursor to indicate from and to which tower you want to transfer a disk.  Each moves counts towards your move total.


To familiarize yourself with the software interface, you will now receive a simple PRACTICE TRIAL.

