eprime problems

[Andrews, A.S.]

Hi All

I'm very new to e-prime and need to put together a paradigm rapidly, so can
you please help?

I need a loop that runs at a fixed 20 seconds.
When the correct input is made, or 18 seconds have passed, it should jump to
a fixation for the balance of the 20 seconds
After 6 seconds an onscreen value should start decrementing at -2/sec
When a wrong key is pressed a message should overlay the centre of the
screen for 2 secs then be cleared, but further input still be allowed during
that 2 secs.

The problems I have specifically with my current attempt are:

How do I force the jump to the fixation after 18 secs or a valid input? I'm
using an ImageDisplay object with 1 sec duration (another is displayed 1 sec
later ) and 18secs timelimit.
The second display shows for 5 secs to bring me to my 6 seconds before
decrementing the counter. How do I then arrange the loop to decrement and
re-display every second, but
allow an input from the 1st display to abort the loop?

Thanks in anticipation for your help.

Regards,

Tony Andrews
Computer Officer
School of Psychology
University of Leicester
Tel: (0116) 223 1709
email: asa8 at le.ac.uk <mailto:asa8 at le.ac.uk>


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