<div dir="ltr">Thanks David!<div><br></div><div>I tried to solve the issue as follows:</div><div><br></div><div>- I put a Waitobject (Duration 0, Allowable Correct1, Correct Correct1, TimeLimit 2000, EndAction none) before the Slide1 (it contains s1)</div><div><br></div><div>- After, Slide1 (Duration SOA, EndAction Terminate)</div><div><br></div><div>- After, Slide2 (it contains s2) (Duration 2000, Allowable Correct2, Correct Correct2, EndAction Terminate)</div><div><br></div><div>By doing so, it does not clear Slide1 after the button press. I can use an Inputobject to do so, by following your advise.</div><div><br></div><div>It seems wotking</div><div><br></div><div><br><div><br>On Friday, October 18, 2013 12:10:02 PM UTC-6, McFarlane, David wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;">Francesco,
<br>
<br>To get responses to both s1 and s2, simply add an input mask with
<br>appropriate Time Limit to each of them -- please see the "Extended
<br>Input" tutorial in Appendix C of the User's Guide that came with
<br>E-Prime (and if you have not already, please first work through *all*
<br>of the tutorials in *all* the Guides before you start work with
<br>E-Prime, it is well worth the effort!).
<br>
<br>You can superimpose visual stimuli with creative use of their Frame
<br>and BackStyle properties. I have done this myself to make all sorts
<br>of interesting effects.
<br>
<br>To make s1 & s2 disappear upon response... Hmm, well, you might use
<br>Clear After to clear s2 (even though Clear After is deprecated, see
<br><a href="http://www.pstnet.com/support/kb.asp?TopicID=4946" target="_blank">http://www.pstnet.com/support/<wbr>kb.asp?TopicID=4946</a> ), but you still
<br>need a bit of inline code to clear s1, so you might as well do them
<br>both in code. Something like
<br>
<br> Do While (s1.InputMasks.IsPending and s2.InputMasks.IsPending)
<br> If s1.InputMasks.IsPending Then s1.Clear
<br> If s2.InputMasks.IsPending Then s2.Clear
<br> Loop
<br> ' expect that s1 & s2 both also get cleared by subsequent program...
<br>
<br>but maybe that gives you enough to start with and you can fix it up
<br>as an exercise. (Advanced exercise: Make efficient algorithm to
<br>handle general case of multiple stimuli with responses.)
<br>
<br>-----
<br>David McFarlane
<br>E-Prime training
<br>online: <a href="http://psychology.msu.edu/Workshops_Courses/eprime.aspx" target="_blank">http://psychology.msu.edu/<wbr>Workshops_Courses/eprime.aspx</a>
<br>Twitter: @EPrimeMaster (<a href="https://twitter.com/EPrimeMaster" target="_blank">https://twitter.com/<wbr>EPrimeMaster</a> )
<br>
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<br>
<br>At 10/17/2013 05:58 PM Thursday, francesco biondi wrote:
<br>>I am designing an experiment using a dual task paradigm.
<br>>I have two stimuli: s1 and s2, and 2 responses: r1 and r2.
<br>>
<br>>After the fixation point, s1 appers on the right side of the screen
<br>>and, after a given soa, s2 appears on the left side of the screen.
<br>>I need to record both the responses r1 and r2.
<br>>
<br>>Since soas are very short (150 and 300ms), subjects won't be able to
<br>>produce r1 by the time s2 appears.
<br>>Nonetheless, I still need s1 to be visible to let subjects to produce r1.
<br>>
<br>>My question is:
<br>>do you know how i can have (after the soa) both the stimuli on the
<br>>screen and record both r1 and r2?
<br>>Also, I would like to s1 and s2 to disappear when, respectively, r1
<br>>and r2 are produced.
<br>>After r2 is produced the next trial starts.
<br>>
<br>>Thanks
<br>>
<br>>Francesco
<br>
<br></blockquote></div></div></div>
<p></p>
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