Dual Task

[David McFarlane]

Francesco,

Great!  Glad you got it working, even though my code example was 
wrong.  In case anybody else chances on this thread, here is a 
corrected code sample

     Do While (s1.InputMasks.IsPending and s2.InputMasks.IsPending)
         If Not(s1.InputMasks.IsPending) Then s1.Clear
         If Not(s2.InputMasks.IsPending) Then s2.Clear
     Loop
     ' expect that s1 & s2 both also get cleared by subsequent program...

And of course, for more information, one may look at the 
InputMask.IsPensing and StimDisplay.Clear topices in the E-Basic Help facility.

Regards,
-- David McFarlane


At 10/18/2013 02:22 PM Friday, francesco biondi wrote:
>Thanks David!
>
>I tried to solve the issue as follows:
>
>- I put a Waitobject (Duration 0, Allowable Correct1, Correct 
>Correct1, TimeLimit 2000, EndAction none) before the Slide1 (it contains s1)
>
>- After, Slide1 (Duration SOA, EndAction Terminate)
>
>- After, Slide2 (it contains s2) (Duration 2000, Allowable Correct2, 
>Correct Correct2, EndAction Terminate)
>
>By doing so, it does not clear Slide1 after the button press. I can 
>use an  Inputobject to do so, by following your advise.
>
>It seems wotking
>
>
>
>On Friday, October 18, 2013 12:10:02 PM UTC-6, McFarlane, David wrote:
>Francesco,
>
>To get responses to both s1 and s2, simply add an input mask with
>appropriate Time Limit to each of them -- please see the "Extended
>Input" tutorial in Appendix C of the User's Guide that came with
>E-Prime (and if you have not already, please first work through *all*
>of the tutorials in *all* the Guides before you start work with
>E-Prime, it is well worth the effort!).
>
>You can superimpose visual stimuli with creative use of their Frame
>and BackStyle properties.  I have done this myself to make all sorts
>of interesting effects.
>
>To make s1 & s2 disappear upon response...  Hmm, well, you might use
>Clear After to clear s2 (even though Clear After is deprecated, see
><http://www.pstnet.com/support/kb.asp?TopicID=4946>http://www.pstnet.com/support/kb.asp?TopicID=4946 
>), but you still
>need a bit of inline code to clear s1, so you might as well do them
>both in code.  Something like
>
>      Do While (s1.InputMasks.IsPending and s2.InputMasks.IsPending)
>          If s1.InputMasks.IsPending Then s1.Clear
>          If s2.InputMasks.IsPending Then s2.Clear
>      Loop
>      ' expect that s1 & s2 both also get cleared by subsequent program...
>
>but maybe that gives you enough to start with and you can fix it up
>as an exercise.  (Advanced exercise:  Make efficient algorithm to
>handle general case of multiple stimuli with responses.)
>
>-----
>David McFarlane
>E-Prime training
>online: 
><http://psychology.msu.edu/Workshops_Courses/eprime.aspx>http://psychology.msu.edu/Workshops_Courses/eprime.aspx 
>
>Twitter:  @EPrimeMaster 
>(<https://twitter.com/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>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>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 10/17/2013 05:58 PM Thursday, francesco biondi wrote:
> >I am designing an experiment using a dual task paradigm.
> >I have two stimuli: s1 and s2, and 2 responses: r1 and r2.
> >
> >After the fixation point, s1 appers on the right side of the screen
> >and, after a given soa, s2 appears on the left side of the screen.
> >I need to record both the responses r1 and r2.
> >
> >Since soas are very short (150 and 300ms), subjects won't be able to
> >produce r1 by the time s2 appears.
> >Nonetheless, I still need s1 to be visible to let subjects to produce r1.
> >
> >My question is:
> >do you know how i can have (after the soa) both the stimuli on the
> >screen and record both r1 and r2?
> >Also, I would like to s1 and s2 to disappear when, respectively, r1
> >and r2 are produced.
> >After r2 is produced the next trial starts.
> >
> >Thanks
> >
> >Francesco
>
>--
>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/e3e142df-825b-4df6-8f1a-b30e7d34f78b%40googlegroups.com>https://groups.google.com/d/msgid/e-prime/e3e142df-825b-4df6-8f1a-b30e7d34f78b%40googlegroups.com.
>For more options, visit 
><https://groups.google.com/groups/opt_out>https://groups.google.com/groups/opt_out.

-- 
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/526188a2.0452320a.61fd.ffff909cSMTPIN_ADDED_MISSING%40gmr-mx.google.com.
For more options, visit https://groups.google.com/groups/opt_out.