e prime crashes if subject presses response button twice

[Michiel Spape]

Hi,
For one, you should be able to code your experiments to be foolproof (or idiot proof, as coders like to say). In E-Prime, that is pretty easy: in the standard e-prime paradigm, say, a priming one with stimulus-->response--->feedback, just make sure that the participant CAN only give one response, by for instance:
* have the Stimulus object only accept one input, and, to avoid clicking on after feedback, insert a short copy of the stimulus, except without any input object.
* design your experiment in such a way that the participant sees feedback notifying him/her this is certainly NOT what they should do (say, use a jump label on the copy of the stimulus), make sure you code into your .edat file that your subject has been naughty and that you don't want to use this particular trial.

I get, however, the impression the above won't help you, useful as the information is, because: E-Prime certainly does not crash if the subject presses the response buttons after another or at the same time. I have done many experiments with sequential, *very fast* response buttons, double response presses, and so on, and have never experienced this. What I have, and very often so, experienced, is that participants are pressing the windows key. They do that sometimes, possibly because it's such an attractive key. They very finest way I've come up to avoiding this issue is by getting a screwdriver, placing it at an angle of 45 degrees below the windows key, and taking out the key. It's perhaps a bit harsh to treat a 5 euro investment like this, but it's cheaper than wasting your own time for 30 minutes. 

If that won't hack it, then: start from scratch. Can you replicate crashing e-prime by pressing two keys at once? (I'd be amazed). Also, there's a ton of good information freely available on the net that'll get you from 'absolute beginner' status to 'average psychologist status'. 
Cheers,
Mich


Dr. Michiel M. Sovijärvi-Spapé
Research Fellow
Perception & Action group
University of Nottingham
School of Psychology
www.cognitology.eu


-----Original Message-----
From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of Jas
Sent: 04 November 2011 16:26
To: E-Prime
Subject: e prime crashes if subject presses response button twice

Hi everybody,

I am trying to design an experiment on E-prime, which pretty much
worked except that if it happens that the subject accidentally presses
the response button more than once, or presses both response buttons
one right after the other, the E prime crashes and won't continue the
experiment. Being an absolute beginner, I don' t even know what
information you may need to be able to help me. Any help from more
experienced users is appreciated.

Best regards, Jas

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com.
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com.
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en.

This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it.   Please do not use, copy or disclose the information contained in this message or in any attachment.  Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham.

This message has been checked for viruses but the contents of an attachment
may still contain software viruses which could damage your computer system:
you are advised to perform your own checks. Email communications with the
University of Nottingham may be monitored as permitted by UK legislation.

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com.
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com.
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en.