Millisecond Forums

Assessing reaction times not by pressing, but by releasing a button

https://forums.millisecond.com/Topic13250.aspx

By sascha.krause - 5/10/2014

Hello,

I want to create a reaction time experiment. I also want to assess reaction times. In my experiment, the participants have to hold a finger on a button. If they see a stimulus, they have to take the finger off. I want to assess how long the finger stayed on the button after presenting a stimulus (a word). Is it possible to assess these kind of reaction times with Inquisit?


Thanks,

Sascha
By Dave - 5/10/2014

Yes, you can do that. To register a key *press* use the key's scancode. To register a key *release*, prepend a minus sign to the scancode. I.e.

/ validresponse = (57)

vs
/ validresponse = (-57)