User`s guide

E-Prime User’s Guide
Appendix C: Sample Experiments
Page A-41
Basic Reaction Time: Pictures
The PictureRT experiment illustrates a simple reaction time experiment, presenting a fixation and
a stimulus picture, and collecting a response to the stimulus. The PictureRT experiment
illustrates the use of the List object, the ImageDisplay object, the Procedure object, and the
FeedbackDisplay object.
The TrialList object defines the variables to be used within the experiment as attributes, the levels
for the attributes, and the number of repetitions for each of the levels (i.e., set in the Weight
attribute). The properties for the TrialList are set to randomly select a value for Stimulus out of
the available exemplars, and to reset the list after all of the exemplars have been chosen.
Figure 1. TrialList defines the Stimulus and CorrectAnswer attributes.