Dr. Jim Winkles of The University of Canberra has often written us with suggestions and comments on PERCEPTION 3.5.
We asked for some general comments and he replied: 

"Excellent colour graphics and animations of the eye and the ear"

 "Very good explanations and demonstrations of Signal Detection Theory"

 "Ready made demonstrations of most of the visual effects discussed in an undergraduate course on Perception"

 And as for the way the programs are used at Canberra:

 "From the pre-packaged experiments in PERCEPTION (which nicely bridge the gap between elementary demonstrations for first-year students and design-your-own-experiment packages for graduate students) my students chose from Signal Detection Theory, Mapping the Color Zones of the Retina, Calibrating the Magnitude of Visual Illusions, and Pitch Discrimination.

 They performed these experiments (each student did one of them) and wrote them up as lab reports.

 I found that the overall exercise was outstandingly useful.

 I've surveyed the available products (as I'm sure you have) and my conclusion is that there is nothing else that matches the experiments in PERCEPTION 3.5"

 Thank you, Dr. Winkles

LSA