The lack of data recording is most likely due to using a value of 0 in the Trial Interval field of your styles.drt file. This needs to be a non-zero number because it is the amount of time that must pass before your first stimulus of that next trial is displayed. Try using a value like 1000 and running your files again to see if all of the data appears if your run DirectRT. If you have any other questions about the Trial Interval field in the styles.drt file, please refer to this page of the DirectRT manual: http://www.empirisoft.com/directrt/h...l_interval.htm

I would also be happy to help you figure out how to program your task. How many consecutive images are displayed? Does some list keep playing if there is no pair response made? Also, consider using the stimlist feature of DirectRT in configuring the displaying of sets of images. See here in the DirectRT manual: http://www.empirisoft.com/directrt/h...ectrt_stim.htm