up Inquisit Language Reference

rwmissstimulus attribute

The rwhitstimulus attribute specifies what stimulus if any should be presented if the subject responds outside the response windowthat at the end of the response window.

Member of

<response>

Syntax

/ rwmissstimulus = stimulusname

Parameters

stimulusname The name of a stimulus defined elsewhere in the script that should be presented if the response occurs withing the window.

Remarks

By default, the beginning and end of the response window is indicated by the appearance and then disappearance of the window stimulus from the screen. This attribute specifies that at the end of the response window, a stimulus should be presented (the window stimulus is also erased). This stimulus remains on the screen until the subject responds or the trial times out.

Examples

The following response defines a response window with an initial center of 500 ms and width of 150 ms. A black exclamation point appears on the screen during the window. If the response is in the window, it turns green and remains on teh screen for 300 ms. Otherwise it turns red. The window is incremented by 75 ms if the mean latency for the block is greater than the current center + 50 ms and the percent correct is less than 60%. The window is decremented if the mean latency for the block is 50 ms earlier than the window center and the percent correct is greater than or equal to 80%. The maximum window center 1000 ms and the minimum is 200 ms:

<response windowprocedure>
/ mode = window
/ rwcenter = 500
/ rwwidth = 150
/ rwinccondition = [(60, 50)]
/ rwdeccondition = [(80, -50)]
/ rwincunit = 75
/ rwdecunit = 75
/ rwmincenter = 200
/ rwmaxcenter = 1000
/ rwlatencymetric = mean
/ rwstimulus = blackexclamationpoint
/ rwhitstimulus = greenexclamationpoint
/ rwmissstimulus = redexclamationpoint
/ rwhitduration = 300
</response>

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