Trial by trial update of response threshold

Hi,
I'm programming a Stroop task in which the response treshold is supposed to be adjusted after every trial according to participants' performance. I work with blocks of 64 trials and the response tresholds need to be set so that every participant will have a success rate of about 75% in ech block. Of course the tresholds need to be determined seperately for congruent and incongruent trials.
Does anyone know haw to go about doing this?
Thanks in advance!
Topic archived. No new replies allowed.