Stimulus termination/disappearance without jumping to the next trial while keeping black screen in Stroop task

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Maria Eugenia De Lahoz Naveiro

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Dec 5, 2024, 5:19:21 AM12/5/24

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Hi all,

I am designing a Stroop task in E-Prime 3 and need help with the following setup:

I want the Stroop stimulus (a word) to disappear as soon as the participant responds, but without ending the trial or moving on to the next one. After the participant responds, the stimulus should disappear, and a black screen should be displayed for a fixed maximum duration of 2000 ms, accounting for the participant's response time. For example:

If the participant takes 400 ms to respond, the word disappears, and a black screen is shown for 1600 ms before continuing with the next trial.
If the participant takes 700 ms to respond, the black screen would only appear for 1300 ms in that case.

How can I implement this behavior in E-Prime? Can it be achieved through the properties of the objects containing the word (Slide/TextDisplay), or is it necessary to use an In-Line between the stimulus and the black screen? If an In-Line is needed, what would be the essential elements of the code?