Job Safety

February 6, 2005

Shapes Used for a Test

Our entry of 2/5/05 spoke about the use of visual challenges for alertness testing. In response to requests for examples of shapes used in the BLT Alertness Test, here are a few. Obviously, these are very simple images, but they are sufficiently challenging when presented in groups of similar images (each row represents a similar set) to present a good proxy for brain function.

Originally uploaded by hmb.
Examples of shapes used in the BLT Alertness Test.