You are about to take part in an experiment in which you need to categorize cards based on the pictures appearing on them.  To begin, you will see four piles (press any key to see the four piles.)
Each pile has a different number, color, and shape.  You will see a series of cards and need to determine which pile each belongs to. Press the 1-4 keys along the top of the keyboard to determine the pile each new card belongs in.  The correct answer depends upon a rule, but you will not know what the rule is.  But, we will tell you on each trial whether or not you were correct. Press any key to continue.
Finally, the rule may change during the task, so when it does, you should figure out what the rule is as quickly as possible and change with it. Press any key to begin.
You may now leave.  Please alert the experimenter that you are done. Press the X key to exit.
Press 1-4 to sort card
Correct!
Incorrect
