2 slides equal to one time duration

[David McFarlane]

Not sure I follow your description of the problem.  But let's suppose 
you have two Slides in your Procedure, let's call them ASlide and 
BSlide.  ASlide takes a response, and the Procedure moves on to 
present BSlide whenever ASlide gets a response, or 2000 ms, whichever 
comes first.  And you want the total duration for ASlide & BSlide to 
be 2500 ms, i.e., BSlide should last for 2500 - (ASlide_actual_duration).

There are many ways to skin this cat.  My favorite method goes as 
follows.  Set the Duration of BSlide to 2500, and in an Inline 
between ASlide and BSlide, do the following:

     SetNextTargetOnsetTime ASlide.OnsetTime

That's all!  Understanding how this works takes some deeper 
understanding of E-Prime timing models & mechanisms, more than I can 
go into here, but look at the SetNextTargetOnsetTime topic in the 
E-Basic Help facility.  But in short, with that bit of code, BSlide 
will use the actual OnsetTime from ASlide in order to compute its own 
ending time, and so will end at 2500 ms from the OnsetTime of ASlide, 
whithout you having to do anything more.  Presto!

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

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At 10/8/2013 10:00 PM Tuesday, Kim Goodyear wrote:
>I am trying to have two sequential slides that are equal to one time 
>duration of 2500 ms.  The first slide and the second slide are 
>completely identical, except in the second slide the text color 
>changes to red so that the participant can see their selection,  I 
>want the first slide to terminate and then have the second slide 
>come up so that they both equal the same 2500 ms.  Since the 
>response time will vary I don't know how to make both slides equal 
>to the same 2500.  I don't know why, but if the buttons aren't 
>selected right away, the total duration is around 5000, or if there 
>is a delay in the response, the total duration is around 4200.  I am 
>not sure how to fix this issue, any advice would be great.  Here is 
>my inline script:
>
>Dim ResetSlide as integer
>Dim x as integer
>
>ResetSlide = StimDisplay.Duration + StimDisplay2.Duration
>ResetSlide = x
>x = 2500

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