Hello,
DirectRT does not currently have a feature that allows for actions based on real-time calculations of responses. So DirectRT cannot be programmed to use information like the total number of responses made on previous trials during that DirectRT session.
However, it its possible to use the skipping and jumping features of DirectRT to program based on responses to individual trials. That is, DirectRT can move from one trial to another individual trial based just on the response to the first trial.
Take a look at these sections of the DirectRT manual for more information about the relevant features:
Skipping: http://www.empirisoft.com/directrt/h...t_skipping.htm
Jumping: http://www.empirisoft.com/directrt/h...rt_jumping.htm
Jason Reed
Empirisoft Software Support Specialist