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Junior Member
 
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Last Login: 9/25/2008 12:48:31 PM
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| What if no response is the correct response? What do I put in Allowable and how do I set the Stimulus (Slide Object) where nothing is the correct response? Thanks ahead of time for any help.
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Forum Newbie
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Last Login: 5/27/2008 5:15:21 AM
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| I have encountered a similar problem: In a certain condition of my experiment, no response is the correct response, whereas if the participant presses on any key it counts as an ERROR. Is there any way to implement this in e-prime 2.x pro? Thanks!
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Forum Newbie
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Last Login: 11/12/2008 6:56:03 AM
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can't you use an inline object after the critical slide or whatever, defining
If ___.RESP = "" (which means nothing) Then
--> z.B. c.SetAttrib ...-->
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Forum MVP
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| Place {ANY} in the allowable and leave correct blank for go/no go experiments where omission of a response is intended for correct. If you place {ANY} then any key hit on the keyboard will invoke an incorrect response. If you put 1234 into Allowable and the subject presses the Q key, then E-Prime will act as if no key has been pressed since Q is not in Allowable. -Brandon
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Forum Newbie
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Last Login: 7/17/2008 1:15:21 PM
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Brandon,
Can you clarify this for me? You say:
Place {ANY} in the allowable and leave correct blank for go/no go experiments where omission of a response is intended for correct. If you place {ANY} then any key hit on the keyboard will invoke an incorrect response. If you put 1234 into Allowable and the subject presses the Q key, then E-Prime will act as if no key has been pressed since Q is not in Allowable.
-Brandon
What about 'go' trials on which the subject is supposed to respond? If I use the same procedure and the only change is that I now put a value in the field for a correct response (e.g., 1), won't pressing a button or key invoke an 'incorrect', even for a correct response based on what you said in your 2nd sentence? Bottom line: can you provide the what to do for the following example: I want subjects to press button 1 for a 'go' response and to press nothing for a 'no-go' response. These should be considered correct. All other response (and no response for 'go' trials) should be considered incorrect. Thanks.
Steve Frost
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| You would place an attribute in the Correct field. For example [CorrectAnswer]. Then in your List on go trials you would place the key(s) that are correct and on no-go you would have the CorrectAnswer column blank. For an example of this look at BasicRT. Edit the TrialList and blank out the row where Y is the stimulus. Then run the experiment, on Y trials if you do not respond it will be marked as correct. On X trials you have to press 1 for correct. You may want to reduce the duration of Stimulus object or you'll wait quite some time.
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