Recording the response time for two correct answers in the same trial

[David McFarlane]

Take a look at the "Multiple Response Collection" example 
downloadable from PST.


-----
David McFarlane
E-Prime training 
online:  http://psychology.msu.edu/Workshops_Courses/eprime.aspx
Twitter:  @EPrimeMaster (twitter.com/EPrimeMaster)

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At 7/24/2012 03:56 PM Tuesday, Sean wrote:
>Hi, I am in the process of creating an experiment that assesses 
>sustained attention. One of my variables is whether the participant 
>is taking the test alone or with another individual. Everything 
>works smoothly in the alone condition, but it gest tricky when I 
>have two people taking the test.
>
>The way the test is set up: There are 300 trials in random order 
>that each contain a string of six digits. The participants' task is 
>to respond correctly and as quickly as possible for each trial. If 
>there is the number 4 in the sequence of numbers, they are asked to 
>respond by pressing 1, and if the 4 is absent they are asked to 
>press 2. Then the screen goes blank for about a half of a second and 
>then shows the next sequence of numbers.
>
>Now I know that the response time is recorded for the individual 
>responding with the 1 and 2, but I need to also be able to record 
>the response time (and correctness) of another participant taking 
>the same test on the same screen using the same keyboard. I got the 
>program to accept 2 responses before moving on to the next sequence, 
>but it only records the first response. For the second participant I 
>asked that they use the keys Z and X the same way I explained for 1 
>and 2 (Z if there is a 4, X if there is not a 4).
>
>Is there a way that the program can log the response time and 
>accuracy of both participants taking the test together? In other 
>words, if one participants presses 1 and the other participant 
>presses Z, how can I get the response time for both of the responses?
>
>Thanks in advance for any help

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