I want to build a forced-choice trial in which subjects see pictures of two persons at the same time and then hear one person after another (pictures still present), suggesting that “this person sounds like this” and “this person sounds like this”, induced by keyboard or klick.
I managed to solve this by timing (one audio file starting after the other), but actually, I want them to start only by experimenter’s induction.
I figured out that I may have to insert some kind of “condition” instead of “time” in the “Start” field of the audio stimulus’ properties, but I do not know how to do that.
Cany anyone help?
Thanks a lot!