Problem with data logging

[David McFarlane]

Yes, the user must have data logging enabled for the object, 
otherwise the data column would just not exist instead of existing 
with values of "NULL".

Offhand, I suspect the user ran across one of the "gotchas" with 
E-Prime's change to a default PreRelease of "(same as duration)" -- 
see http://www.pstnet.com/support/kb.asp?TopicID=2627 and 
http://www.pstnet.com/support/kb.asp?TopicID=5178 .  In particular, 
when using EP2.0.8 or later, by default data logging for a Procedure 
will take place immediately after *onset* of the last object in the 
Procedure, i.e., during the PreRelease period of the last object.  As 
a result, if a response arrives during the PreRelease of the last 
object in a Procedure it will not get logged.  As suggested at the 
above links, several solutions exist, e.g., setting PreRelease to 0 
as needed, or use of Process Pending Input Masks.

-----
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 1/24/2014 05:18 AM Friday, JACanterbury wrote:
>Hi Ieva
>
>excuse me checking the obvious first...
>
>Have you got data logging turned on (its on the 'duration/input' tab 
>for the e-prime object of interest - e.g. your text object ?
>
>cheers,
>
>john
>
>On Thursday, January 23, 2014 12:03:01 PM UTC, Ieva Zeromskaite wrote:
>Hello,
>I have a problem with data logging. Experiment itself runs smoothly, 
>no errors occur, but when I go to the Data File it shows me NULL in 
>every cell where the data should be, thus for some reason it's no recording it.
>I double-checked that in Properties everything is correct.
>My guess is that the problem might arise because the image to which 
>participants respond only lasts 250ms, but I set response time to 'infinite'.
>Does anybody know what are the possible reasons for the data not being logged?
>Thank you!
>Ieva

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