Dual Task (One is experimenter-paced, the other is participant-paced)

[Alphonse Stickle]

to a beginning, perraps to adjust properties page for presentation of 
picture object, regarding duration (= 3000), and allowable reponse (= 
none). Perraps also to read (perform) tutorials and user guide, and 
the e-primer of Michiel Spape.

At 04:58 AM 1/08/2012, you wrote:
>Hi,
>
>I'm trying to program a dual task in which participants are 
>presented with a series of pictures that appear for 3 seconds each. 
>At the same time, they are completing a secondary letter detection 
>task in which they hear different letters of the alphabet and must 
>enter a corresponding key. I want this secondary task to be 
>participant-paced meaning that the next letter is presented after 
>they enter a response. Also, I want the program to exit as soon as 
>10 pictures appear whether or not the letter detection task is done.
>
>I've downloaded the dual task example on pstnet support but it does 
>not appear to work the way I want it to. Specifically, the pictures 
>change every time I enter a response for the secondary task rather 
>than after every 3 seconds. I guess the difference between my 
>experiment and the example is that both of the tasks in the example 
>are experimenter-paced whereas in my experiment, one is 
>experimenter-paced and one is participant-paced. Any help would be 
>greatly appreciated! Thanks!
>
>Khuyen
>
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