Running E-Prime experiments online

[Michiel Spape]

Couple of thoughts:

-          That would be far easier. The only thing I could think of which you might try is to have people log on to your system through remote desktop (mstsc) and see if you can run E-Prime that way. Last time I tried that (i.e. last time I tried to work on an e-prime experiment from home), this failed, however.

-          The problem with Ben's idea here is that you'd require each of your subjects to have an E-Prime license key (cost of which is about 650 Euro, last time I checked). 

 

Alternatively, and MUCH easier, is to learn a simple bit of Flash and let them run Flash experiments from your server. It's very easy to program (in comparison with trying to figure out how, if at all possible, to run E-Prime on a server!), rather easy to learn (Flash comes with a very easy tutorial that gets you doing cool things within hours), and although the timing is rather inaccurate, it's better than nothing. Cheaper, and to mind, better, is to run stuff on Silverlight and design experiments using Expression Blend. It's free for university students (google 'Microsoft Dreamspark'), can do Visual Basic (but later versions), and more properly object based than Flash.

 

You should consider:

-          Running experiments from a server (rather than a local computer) brings inaccuracy due to latency problems;

-          Running experiments from local computers connected to a server brings inaccuracy due to the fact that you don't have a clue as to what they're running.

Therefore, E-Prime won't do much better than anything other out there. If you're very new to E-Prime, I recommend learning something else instead - transition from E-Prime to proper programming is harsher than the other way around.

 

Cheers,

Mich

 

 

 

Michiel Spapé

Research Fellow

Perception & Action group

University of Nottingham

School of Psychology

www.cognitology.eu

 

From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of ben robinson
Sent: 24 September 2010 13:16
To: e-prime at googlegroups.com
Subject: Re: Running E-Prime experiments online

 

why not have them run it locally and email you their data file when they've finished?

On Fri, Sep 24, 2010 at 4:01 AM, tudor <tudor3 at gmail.com> wrote:

Hello everyone,

I have an E-Prime script for an experiment that measures subjects'
reaction times to a simple number comparison task. The design of the
experiment is such that the subjects need to run the experiment daily
for 3 weeks, which is why I intend to have them run it from their
homes, online, rather than asking them to come each day into the lab.

I thought it would be the easiest for the subjects if their daily task
is to login to a website and run the script through their Internet
browser. This will enable me to monitor their performance every day,
which is quite important. The data files (which are small, < 1 MB)
would be stored on the server.
However I am concerned that, in this case, the reaction times will not
be accurate, because, unless the script is somehow ran "locally",
there will probably be a significant (and variable) Internet lag
between their response and the moment the response is registered.
On the other hand, if I choose to run the experiment "offline" by
having them run a copy of the script on their computers, I will have
no knowledge of their performance before the end of the 3 weeks (I
would not want to ask them to submit the data files every day).

Since I am very new to E-Prime, I am not sure what would be the best
way to go about running this experiment. Can anyone help? Many thanks
in advance!

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