Accuracy of response times: E-Prime 1.2 and Windows 7 32-bit

[Michiel Spape]

Hi Hannah,
As far as I know, this is pretty much the state of things, as it is: Windows7/Vista can be problematic with presenting sound, but there seems little definitive word from PST as to how operating systems that are less than a decade(!) old perform in terms of timing. There might be a problem - but that is exactly what they said when E-Prime 1.1.3 was run on PCs that were newer than Win98SE (namely, XP) - and merely gives the impression that they are insufficiently beta-testing and running hopelessly behind the times.

That said, I'm not seeing any clear reason why a Stroop effect on a Win7 computer would suddenly be 81 ms instead of 80 - the greater bit of effect is in the type of font used! I've successfully programmed a Simon task on my mobile phone (an ancient-looking Windows Mobile 6.1 phone) in C#, and the response times seem pretty normal as far as I can see (bit slower because of the tiny buttons). So, what do you mean with "odd response times"? Do they look very unlike other numbers? :)

Still, I agree it would be good to hear from PST something like "after extensive testing, we've found that, all in all, Win7 isn't much worse than WinXP" and some advice. One suggestion for you in the mean while: you might try the WinXP mode in Win7 to see if the response times look less odd...

Best,
Mich


Michiel 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 Hannah Witherstone
Sent: 30 March 2011 10:09
To: E-Prime
Subject: Accuracy of response times: E-Prime 1.2 and Windows 7 32-bit

Dear all

I've been running an experiment using E-Prime 1.2 and Windows 7 32-bit
professional.  My response times look very odd and was wondering how
much the data could have been affected by my software set-up?

I'm aware there may be some problems with E-Prime's timings via
Windows 7 but couldn't find any definitive answers regarding the
extent to which response times are affected.

If anyone could enlighten me that would be great.

Thanks in advance,
Hannah

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