Problem with data logging
David McFarlane
mcfarla9 at msu.edu
Fri Jan 24 16:46:17 UTC 2014
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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