Collecting data with your customized version of the Iowa Gambling Task in your own Google Spreadheet

Here's a three step plan to collect data in your own Google Spreadsheet (make sure you're logged into your Google account; if you don't have any, you'll need to create one):

  1. Click this link to create a copy from the Google Forms Template for the Iowa Gambling Task.
  2. If you're not logged in to a Google account, you will be asked to do so. You will be asked if you want to make a copy of ‘this document’. Click 'Yes, make a copy'.
  3. A new Google Form, entitled ‘Iowa Gambling Taks’, will open up. You should leave the form unchanged. In the 'Form' menu click 'Go to live form'. The form will open up in a new tab or window. Leave your new Google Form opened, copy the URL of the form and fill out the form on this page below (you can leave most things unchanged). If you need to customize the task parameters (like the number of trials) or the instruction, you can do so by clicking the gray buttons below the URL field of the form.

After you pressed the button at the bottom of this page, you'll see a link at the top of this page that will bring you to your customized version of the Iowa Gambling Task. You need to use exactly that link to gather data in your own spreadsheet, so you better save it in your bookmarks or to your desktop. Before you use it, do read the license. Good luck!

Google Form URL:

Copy the URL of your Google Form and paste it in the text box below

Stimulus parameters

Here you can change the enforcement scheme: Each deck earns the participant either 100 or 50 point for every card drawn from it. Each deck is also associated with a loss scheme, see wikipedia or Bechara et al., (2005). For instance, in the original task, deck A is associated with always winning 100 point, but a chance of 0.5 to loose a relatively small amount of points, which totals 1250 for every 10 cards selected from this deck. To implement this enforcement scheme we assign to 5 cards (50% of 10) the loss 0, to 5 other cards more or less evenly distributed losses that total 1250; that is, with deck A we might associate the reward scheme loss sequence: 0, 0, 0, 0, 0, 150, 200, 250, 300, 350. Each deck needs to be associated with a reinforcement scheme. The default schemes are as those used by Bechara et al. in the original version of the task.

The number of trials (rounds of card selection) that a participant has to complete must be set (defaults to 100). To create 100 trials from the 10 elements in the example loss sequence, the loss sequence needs to be repeated 10 times. (Another example: If 84 trials are required and the loss sequence consists of 6 loss values, then the loss sequence should be repeated 84/6=14 times.) Note: Specifying one long sequence, (e.g., all 100 loss values for each deck) is not equivalent to specifying a short loss sequence of 10 values, and repeating that sequence 10 times: Each repeated version of the sequence is shuffled on its own—this guarantees that every 10 cards chosen from deck A a loss of 1250 points will be suffered, which may not be the case if a single long loss sequence is shuffled.

Losses deck A: Losses deck B:
Losses deck C: Losses deck D:
smiley feedback
graphical feedback
ask for a subject ID
nr of repetitions of the loss sequences nr of trials

Customizing the task instructions

You can customize the task instruction here. Currently it is not possible to change the language of non-instructions components.

Instruction 1: Default: “In this short experiment, you are asked to repeatedly pick one of four decks of cards such as the ones displayed below:”
Instruction 2: Default: “You can select one of the decks of cards by pointing and clicking the deck of your choice with your mouse.”
Instruction 3: Default: “With every card you pick, you win “Iowa Gambling test dollars” ($i), but you may also lose some. Some decks are more profitable than others. Try to win a much dollars as possible by drawing cards from the most profitable deck.”
Instruction 4: Default: “You will get 100 opportunities to select a card from the deck that you think will give you the highest revenue. Your performance (current earnings) and your advance in the experiment will be displayed on screen.”
Instruction 5: Default: “You start with $i 2000. Click ‘Start’ to start the experiment.”
Thanks Default: The default thanks page gives performance feedback in terms of total score in both English and Dutch. You can specify your own URL (including the http://), or choose one of thankyouIGT-en.html and thankyouIGT-nl.html. If you specify your own URL the total score will be made available through the query term ts= of the url (e.g., with http://example.com/myThanks.html and a total score of 3050, after finishing the Task the participant will be redirected to the url http://example.com/myThanks.html?ts=3050).

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