INFO: Specifying a non response as a correct response [17234]

This article applies to:
E-Prime 3.0
E-Prime 2.0
E-Prime 1.x

Detail

Some tasks in E-Prime (such as a Go-No Go paradigm) involve specifying "no response" in the Correct field of the object collecting the response on certain trials throughout the experiment.

To do this, a "CorrectResponse" attribute must be created in the TrialList. For trials in which the correct response is to press a particular key or button, the value of the "CorrectResponse" attribute will be the key or button that must be pressed (e.g. 1, a, {SPACE}, etc.). For trials in which "no response" is the correct response, the value of the "CorrectResponse" attribute must be absolutely nothing (e.g. the cell should be empty).

For example:

The "CorrectResponse" attribute must then be referenced in the Correct field of the object collecting the response (using bracket notation):

During the experiment, E-Prime interprets no response from the subject as correct on trials in which the value "CorrectResponse" attribute is blank. The response object's ACC property reflects this in the data file (i.e. no response results in a "1" for the ACC property).

See Also:

E-STUDIO: List Object [22700]

E-STUDIO: Input Devices [22723]

INFO: Ability to specify multiple correct answers [17284]