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I am attempting to recreate Levens & Gotlib's (2010) Emotional N-Back Task into Inquisit but I've run into a few difficulties.
For the 0-Back:
- I would like to have 3 blocks of trials (one with sad faces, one with happy faces, and one with neutral faces), and would like to counterbalance face gender across blocks ie., 2 blocks of male and 1 block female, or vice versa. Besides creating two separate testing programs, is there any other way I could manually counterbalance gender in that task? How do I tell Inquisit to select only female blocks? Right now, I currently have different stimuli variables according to expression and gender ie., femalesad, femalehappy, etc.,
For the 2-Back (3 blocks of female faces and 3 blocks of male faces):
- Participants are asked to indicate whether the emotional expression is the same or different as that presented two faces earlier (using two separate keys). The authors identify 4 different types of trials:
1) Match-set trials ("same" response trial), where the currently presented facial expression is the same as that presented two trials earlier
2) Break-set trial ("different" response trial), which immediately follows a match-set trial; "The facial expression presented three trials earlier, which must be discarded, was one expression in a matched pair."
3) Perseveration-set trial ("different response trial), similar to break-set trial in that they must follow a match-set trial. In perseveration set trials, however, the current face is the same valence as the face presented three trials earlier, the stimulus that must be removed from WM (ie., a happy face (n+6) immediately follows a happy face (n+5) when a happy was present at (n+3)
4) No-set trials ("different" response trial), does not follow a match-set. Participants simply need to determine that there is no match between the current picture and that presented 2 trials earlier.
My question is: is there anyway Inquisit can identify these trials for me to analyze more easily, or will I need to sort through the data myself and analyze the RT based on the faces that were presented?
For the entire task
- Is there any way I can have 3 0-Back blocks followed by 6 2-Back blocks into one experiment? I would like them to follow one another, as opposed to having participants alternate between the two tasks (as is currently the case in the n-back script on Inquisit)
Thank you so much in advance,
Best,
Elise Grimm
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