[vslist] Another MacOSX software question

[Rosaleen McCarthy]

I've found the various responses to Denis Peli's enquiry helpful and 
informative. Here's another enquiry that might also be of general 
interest.

Does anyone know of simple (and cost-effective) OSX software for 
presenting single and multiple timed displays (range 20 msec - 20 
sec) and recording responses (reaction times and key presses)?

In the days before OSX, I used VScope (Microspsych/Jim Enns) and 
loved it - but VScope only runs on machines that boot in OS9 or lower 
and there is no upgrade planned.
http://www.interchange.ubc.ca/vsearch/software/whatscope.html

Any thoughts/suggestions? I don't want to change platforms if I can avoid it.

Thanks in anticipation

Roz McCarthy