<div><font size="2">Hi </font></div><div><font size="2"> </font></div><div><font size="2">I want to execute an experiment consisting of a series of sorting tasks with 90 faces in the E-Prime. In the experiment, the participants will be asked to indicate if a face is threatening or nonthreatening by pressing either one of the two button boxes as quickly as they can, during which RTs will be recorded. After the first procedure of sorting that includes all 90 faces, some faces (say, N= x) will be "threatening" and the rest (N= 90-x) will be "nonthreatening". Then, within the x "threatening" faces, another procedure of sorting based on "slightly threatening" and "very threatening"will be administrated automatically. Then, additional procedures of sorting based on more or less "threatening" ratings of the faces will be dynamically and automatically generated to specify the threatening levels of the faces. These series of procedures continue until there is only one face left in the "more threatening" group as you can imagine. Since experimenters don't know which faces will be judged "threatening", "very threatening" or whatever labels we name them, the length (or depth in terms of loops) of the whole experiment is unknown prior to designing the E-Prime program. </font></div><div><font size="2"> </font></div><div><font size="2">My question is if E-Prime and E-Basic have the capacity to enable dynamic generation of new procedures, blocks and assigning stimuli to them automatically based on the choice of participants? How to accomplish that? I learned that the task I intend to accomplish looks very similar to the Contingant Branching, but it still has its unique problem with the uncertainty in the number and content of "Branching". </font></div><div><font size="2"> </font></div><div><font size="2">Looking forward to your precious comments, suggestions and critics! </font></div><div><font size="2"> </font></div><div><font size="2">Thanks a lot!</font></div><div><font size="2"> </font></div><div><font size="2">Best,</font></div><div><font size="2"> </font></div><div><font size="2">Shensheng</font> </div>
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