Text display while a video is running

[David McFarlane]

To answer the question as posed, yes, there should be a way that one 
can initiate a Text display without ending the video.  Would you also 
like to know how?  A lot of details involved, but here are just a few 
broad thoughts to get you started...

For your Movie object, set Stop After to No, and Duration to 0.  Now 
the movie will continue to play while your program goes on to run 
other things.  In particular, it can move on to process responses and 
present feedback.  As for that aspect...

I would probably use some inline code to run a loop for the response 
feedback.  E.g., follow the Movie object with a Wait object that 
waits for a response, then after that a Text object to present 
feedback (making sure that it does not overlap the movie), and then 
an inline that logs the RTTime of the Wait response and loops back to 
the Wait if the Movie is not done yet.  You could then derive RTs by 
comparison of the Wait RTTimes to the Movie OnsetTime.

Alternatively (and likely the way I would do it), set up the input 
mask for the Movie to collect multiple responses, and then make use 
of that facility as shown in the Multiple Response Collection example 
on the PST web site.  Use inline code right after the Movie to detect 
any new response to the Movie.  Then present your Text feedback, and 
more inline to loop back to the response detection inline.  At the 
end of the Procedure, after the response loop, more inline code to 
log all the responses to the Movie, as shown how in the Multiple 
Response Collection example.

As you can see, this project may require a variety of advanced 
skills, so you have your work cut out for you.

-----
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 https://support.pstnet.com , 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.
\----


At 12/3/2013 01:32 PM Tuesday, Wojciech Kaczkowski wrote:
>I'm currently designing an experiment in EPrime 2.0 where 
>participants are watching a video depicting a fight between two 
>people. The participants are instructed to indicate whether they 
>find a particular behavior aggressive by pressing a space bar. They 
>can make their responses multiple times and at any time while the 
>video is playing. There is no correct or incorrect response.
>
>The thing that I'm having a problem with is that I want a small text 
>display to come on the screen whenever the participant presses a 
>space bar. The text would say something like "Your response has been 
>registered" so that the participant knows that his response was 
>recorded. However, I do not want for the text display to have any 
>effect on the video - it should keep going no matter when the 
>participant makes the response. Basically, I'm trying to set up a 
>text display while the movie clip is running. The participant's 
>response would initiate the text display, but not terminate the video.
>
>Does anyone have any suggestions on how to go about setting up this 
>experiment? So far, the only possible actions allowable for a 
>response are either to terminate a video, jump to a label, or no 
>action. Is there a way that one can initiate a text display without 
>ending the video?

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To unsubscribe from this group and stop receiving emails from it, send an email to e-prime+unsubscribe at googlegroups.com.
To post to this group, send email to e-prime at googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/e-prime/529e2d64.6801320a.2e67.1da2SMTPIN_ADDED_MISSING%40gmr-mx.google.com.
For more options, visit https://groups.google.com/groups/opt_out.