Terminate the slide only when the subject press a key after a random time

[Cognitology]

Hi,

It’s not really that strange – I find that many people, but cognitive
psychologists in particular, seem unaware of just how very small the world
of their favourite paradigm can be J In fact, I have not heard of this
procedure and I suppose this is because it is more popular with those who’re
more interested in the conditioning side of things, but I could be wrong
there. 

In any case, what’s wrong with 

1.       Inline: Accuracy = -1

2.       LabelX

3.       Slide, set .Duration to -1. 

4.       If Slide.RT < T then 

Accuracy = 0

Goto LabelX

Etc?

Sorry, it’s Friday, difficult to think very straight, but to be honest, I
cannot see what’s wrong with just going back to the moment just before the
slide is presented. 

Best,

Michiel

 

From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf
Of Valerio Biscione
Sent: 22. March 2013 13:21
To: e-prime at googlegroups.com
Subject: Terminate the slide only when the subject press a key after a
random time

 

I have searched on the group for other topics with this problem, but I
haven't found anything. 
This is actually a normal Variable Interval schedule, so it's strange that
hasn't been treated already.

I want to show a slide to the subject. At the beginning of the slide a
random number is generated. This random number indicates the number of
milliseconds that the subjects has to wait to receive a reward. Let's call
this random number T. The subject can press the key anytime he/she wants,
but only if he presses the time AFTER the time T he will receive a reward
and the software can go to the next slide. If he presses the key before T he
receive a punishment, but can still try to "win" the reward in the slide.

I already solved the problem to record all the RTtime that the subject press
the key during the slide. The problem is to make the software to go further
ONLY if the key is pressed after T. T is recorded in a variable, but won't
be a problem to use an attribute.
Do you have any idea?
Kind Regards
Valerio 

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