Two participants using one keyboard for response

[David McFarlane]

Please see thread at https://groups.google.com/d/topic/e-prime/whnN3ecoqKo .


At 9/12/2013 01:30 PM Thursday, Sheila Bouten wrote:
>I have two participants in my experiment using one keyboard to 
>respond to a memory task. For example, if they are shown an image 
>they have seen before, the participant on the left would press "Q" 
>while the participant on the right would press "N". If they hadn't 
>seen the image before, the participant on the left would press "W" 
>while the participant on the right would press "M". My problem is 
>that my code makes it such that if one participant accidentally 
>presses one key twice, their response is recorded twice and the 
>other participant's response is not recorded. This data is thrown 
>out. Is there some code to prevent this by recording only one 
>keystroke from each half of the keyboard?
>
>Thanks for your help!

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