Difficulty programming Iowa Gambling task and presenting total sum earned

I'm trying to program a gambling experiment and am having trouble getting the monetary sum to post on screen.

Typically this is a simple task, where a summation equation that references an attribute can be programmed via in-line code.

The challenge with my experiment, however, is that I have used in-line code to run a contingent set-up. Overall what I'm trying to do is this:

Participants see 4 card choices

When they select a card, their response selection jumps to a list programmed with a schedule of rewards and losses (e.g. loss on every 10th trial in one list versus loss every 2 trials in a different list).

Using Inline code I have figured out how to make Eprime move to a separate list stored in Unreferenced objects based on distinct responses:

If DeckSlide.RESP = "1" Then
DeckA.Run c

ElseIf DeckSlide.RESP = "2" Then
DeckB.Run c

ElseIf DeckSlide.RESP = "3" Then
DeckC.Run c

ElseIf DeckSlide.RESP = "4" Then
DeckD.Run c

End If

I used in-line code in this manner because I want Eprime to progress from top to bottom of each of these lists with every trial (e.g. the first time 1 is selected pull from row 1, the second time 1 is selected pull from row 2. the first time 2 is selected pull from row 1 of list 2).

the problem now is that if I use in line code such as the code below in my feedback slide, I get an error message.

var = c.getAttrib ("Reward")
totalsum = totalsum + var

c.SetAttrib "totalsum", totalsum
c.SetAttrib "var", var

I've read forums about the Iowa Gambling Task proposing to use a nested structure instead and a code along the lines of: Set DeckListOrder. = OffsetOrder(Asc(UCase(DeckList.RESP)) - Asc ("A") + 1) but haven't figured out how to make this work.

Does any of this make sense. Any help is much appreciated!!

Experiment available via link below: (we use a chronos button box for responses)

https://drive.google.com/open?id=17oypTTIuzawXbtEnlN16mvak4aAlkSni https://drive.google.com/open?id=17oypTTIuzawXbtEnlN16mvak4aAlkSni

Sofia Rohter December 12, 2019 21:28

After working on this for weeks, I actually managed to get this working after posting this question. I've linked a working version of my Iowa Gambling Task here in case anyone can benefit from this!

https://drive.google.com/open?id=17oypTTIuzawXbtEnlN16mvak4aAlkSni

Devarshi Vasa July 03, 2020 02:25

Thank you for uploading your script! I’m interested in taking a closer look but my Eprime 2 won’t generate it because I don’t have the device “Chronos” installed. I was wondering if you can share the task without this dependency? thanks a lot!

Difficulty programming Iowa Gambling task and presenting total sum earned

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