Creating a Variable
I have an issue while creating an overall measure of time. I have attached a screenshot that shows what the data looks like thus far. I need to now create a variable that is called "time in trial" where I basically take the "Nback start" minus the "Nback stop." More specifically I would need several things to happen. 1. When "Nback # of letters presented" equals 1 the "time in trial" should equal ...