Using individual RT average as a parameter for later trials (case 20784)

[bstewart]

I currently use the DirectRT Styles feature to set the response window or maximum RT before being told to go faster.

I am interested in determining whether there is a way to individualize this maximum RT prompt for each participant. I was thinking of having them complete some practice trials (20), and then using the average RT from those trials to set the maximum RT parameter. Unfortunately, this parameter is in the DirectRT styles, and I don't know if it can be reset automatically for each individual. A work around is to have a separate DirectRT file for the practice trials, and then manually change the Style file for each participant. Any other possibilities?