no default property for the object and EGI

Michael J. Crowley michael.crowley at yale.edu
Wed Jul 20 15:30:34 UTC 2005


Dear List,

I'm using eprime in conjunction with EGI netstation and getting the following
error message:

"no default property for the object"

The task displays two presents red and blue.  One will be rewarded, one will be
punished.  If the subject selects the correct one, they are rewarded, and if
they select the other, they are punished.  The side of the screen the presents
are on is dictated by the trial list. The trial list is selected from until the
subject has selected the correct present 7 times consecutively and then the
trial list is terminated.  On subsequent blocks of lists, the winning/losing
present will reverse. We're interested in deriving ERPs to the feedback.  Type
of feedback (reward or punishment) is determined in the trial, depending on
the subject's response.

thanks for any help you can provide.

Mike


Michael J. Crowley, Ph.D.

Yale Child Study Center
230 South Frontage Rd.
New Haven, CT 06520



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