RT on "moving" scales

54 views
Skip to first unread message

Soizic Argaud

unread,
Aug 5, 2013, 7:12:43 AM8/5/13
to E-Prime Group
Hello everyone,

In a part of my experiment, participants have to evaluate stimuli on different continuous scales from 0 to 100 % each. To allow them to see their answers (they move the cursor of each scale from 0 to 100 % directly clicking where they want on the scale), I use a loop which "send" them in the beginning of the slide where the scales are at every mouse click until they are satisfied with their responses. When they are, they just have to click on a "OK, next" button to see the next stimuli and continue the experiment...

I wonder what mean the RT and RTTime exactly ? Is RT the real time participants take to answer the question, I mean the time from the apparition of the slide with scales to the click on the "OK, next" button (regardless of the number of clicks and, therefore, the number of times that the slide with scales is "loaded" again) ?

Thank you so much if you can help me on that point, 
Best, 

Soizic

David McFarlane

unread,
Aug 6, 2013, 10:17:49 AM8/6/13
to e-p...@googlegroups.com
Soizic,

In general, the RT logged for a stimulus object corresponds to the
time from the onset of the stimulus until the final or "terminating"
response to that stimulus, while RTTime corresponds to the time from
the start of the experiment session until the final or "terminating"
response to that stimulus.

But in your specific case, you have some intervening inline code
controlling the processing of subject responses, and in that case RT
means whatever you programmed it to mean. You just have to look at
your custom program code and figure it out.

-----
David McFarlane
E-Prime training
online: http://psychology.msu.edu/Workshops_Courses/eprime.aspx
Twitter: @EPrimeMaster (https://twitter.com/EPrimeMaster)

/----
Stock reminder: 1) I do not work for PST. 2) PST's trained staff
take 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, so make full use of
it. 3) In addition, PST offers several instructional videos on their
YouTube channel (http://www.youtube.com/user/PSTNET ). 4) If you do
get an answer from PST staff, please extend the courtesy of posting
their reply back here for the sake of others.
\----
Reply all
Reply to author
Forward
0 new messages