In the Iowa gambling task participants are initially given $2,000 facsimile dollars and asked to win as much money as possible. They are presented with four decks of cards that represent either a gain or loss in money. One card from each deck is drawn at a time. Consistently choosing a card from the advantageous decks results in a net gain, whereas choosing from a disadvantageous deck results in a net loss. Each card from the disadvantageous deck offers a higher reward than the advantageous deck, but also a higher and more variable loss.