dual task reaction times

[David McFarlane]

Alex,

>I have an experiment where I have a vocal response to a simple
>multiplication (eg. 7*8) and a keyboard response to a red circle (and
>not to a green or yellow one). These are presented on the same slide.
>My problem is that only the response that is made first gets logged
>with its reaction time and other data. Is there a way to log both of
>the reaction times?

One thought, start with a Wait object with Duration 0, have it get 
the voice response with an appropriate Time Limit, and set End Action 
to (none).  Follow that with your slide object, and have the slide 
get the keyboard response for the red circle, again with an 
appropriate Time Limit.  One problem, you will have to decide which 
if either of these responses is allowed to terminate the slide, 
probably best to let the slide just time out and set End Action to 
(none) for all inputs.

Also, if you browse the PST Downloads area you may find that they 
have a program to demonstrate this.

-- David McFarlane, Professional Faultfinder


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