Buttons off screen?

[jarvis24]

[edited from support email]
We have line bisection images onscreen and we need the participants to their response without using a mouse. So, it sounds like a scale response, but we need the buttons to be invisible--we only want the lines on the screen, and the participant can advance by pressing either 1 or 2. Do you know of any way to do that?

[jarvis24]

You could use a 2-item scale response with a background image. And you could use a top (t) parameter to set the buttons off screen, something like this:

(p2,t2000)

Hope that helps,
Blair

Hey Blair,
It worked! Thanks so much for your help.