RT feedback according to list attribute

[David McFarlane]

Charlotte,

Stock reminder:  1) I do not work for PST.  2) PST's trained staff 
takes any and all questions at 
http://support.pstnet.com/e%2Dprime/support/login.asp , and they 
strive to respond to all requests in 24-48 hours -- this is pretty 
much their substitute for proper documentation, so make full use of 
it.  3) If you do get an answer from PST Web Support, please extend 
the courtesy of posting their reply back here for the sake of others.

That said, here is my take...

No built-in way for EP to do this.  But of course EP does provide all 
the elements to roll your own.  Just create some global variables for 
each of your desired sums or averages, and use inline code to 
accumulate values to the appropriate global variable after each 
response.  You might use a single global array to hold the values, or 
take advantage of the Summation class provided by EP (see the online 
E-Basic Help).  For help getting started with global variables and 
inline code, please work through Chapter 4 of the User's Guide that 
came with E-Prime.

-- David McFarlane, Professional Faultfinder


>I've set up a lexical decision task and need to provide participants
>with their mean response time to words, and their mean response time
>to non-words at the end of the experiment. Whether each trial is a
>word or non-word is set up as a list attribute.
>
>At the moment I have the feedback slide on the sessionproc and thought
>it was set up to provide the mean response time to all trials (still
>not what I actually wanted), but on testing it is actually just
>providing the response time to the very last trial.
>
>Please help! How can I provide a slide with mean response times, that
>is split up according to 'word type' attribute?
>
>Charlotte

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