Memory tasks (case 17441)

[David.Barel]

I wish to design an experiment that incorparates a Digit span task.

Digit span - 2 to 7 long strings of digits will be presented, one digit at a time. After a string has been presented the participant must press the corresponding numbers using the keyboard.

Upon answering correctly the experiment should move to a "harder" trial with an additional digit. An example would be, "1 3" are presented, the participant answers "1 3" and the next trial is "2 5 3". Upon making a mistake the block ends.

If you have / know who has such a direct rt file, I would be delighted to use their design. If not any advice would be great as it's been a while since I last used Direct RT.

David Bar-El