Take a look at the attached file from the Samples folder that came with your copy of DirectRT; you can find it in DirectRT > Samples > 6-v2006 > gnat on your own machine wherever you installed the DirectRT program files. It is a great example of how to show feedback-in this case green O or red X-on the same screen as the stimuli based. The key to getting the feedback displayed on the same screen is using a 0 as the last of the three numbers in loc field for the green O or the jump trial 999 for the red X. Please let me know if you have any questions or trouble getting this to work in your own input file.
Thank you for your answer.
In this example correct answers get the green O on the same screen (by putting the o in clear in Loc column) but the wrong answers get the red X on a new screen (because it further them to a different trial).
I need a way for both good and bad feedback to appear on the screen while the task is still there.
Alaya,
The attached files gives you one way to show both the task and the feedback on the same screen. Assuming that you have a list of stimuli for the task that you want to randomly present, we can use a combination of random stimlists, using previous stimuli, and yoking random pairs to accomplish this.
Open the input file and take a look at rows 3 and 4; each task and its feedback is based on a pair of rows, so let's just take a look at the two rows for the first stimulus. The task in row 3 is to press a key in response to the the fruit.bmp label in 3F and then randomly selects a word from the stimlist fruit (signified by $fruit in 3I). For all trials in this file, pressing the 1 key is the correct response and pressing the 2 key is the incorrect response.
To show the correct feedback of the green circle, look at columns L through W. 3L simply shows the fruit.bmp in same location of the screen. 3O uses yoking random pairs (signified by &fruit2^-1) by calling out to stimlist fruit2, which is simply a copy of the fruit stimlist. By using the fruit2 stimlist with this syntax, the program will display the same word that was randomly chosen from the fruit stimlist. The O in 3R will show up below the word. Finally, to jump to the next task in row 5, we need to end the trial in row 3 with a keypress that you can see in 3W.
If the person presses 2, you can see in cell 3K that they will jump to trial 4 and receive incorrect feedback. The presentation of the feedback stimuli is similar to that for a correct keypress except for calling on previous stimuli in 4I. The logic in that cell ensures that particpants will see whatever word was randomly selected from the fruit list in 3F.
Please let me know if you have any questions about running this input file or the logic behind it.
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