I am designing a Stroop task with SuperLab similar to the one Hester, Foxe, Molholm, Shpaner,and Garavan described in NeuroImage 2005 (“Neural mechanisms involved in error processing: A comparison of errors made with and without awareness”).
In this Stroop design, the participants will press a key during all congruent conditions (i.e., when color word and font color match) but will NOT press a key during either (a) incongruent conditions or (b) after the same stimulus is presented twice in a row. I used a previous post (search for “Stroop”) at this forum to create several word lists, each with a unique font color, to correctly evaluate congruent vs. incongruent stimuli, but I am still having difficulty figuring out how to have SuperLab identify response patterns after two identical stimuli are presented back-to-back.
Any suggestions? I assume it involves a combination of codes and conditional statements, both of which I haven’t really come to grips with yet. Thanks!