They are modern day equivalent of "snake oil". They are devices sold by psycho-medical professionals designed to generate revenue for themselves and tick a box in the Human Remains' recruitment process. The basic idea of these things is that you are asked a couple of hundred questions about your beliefs, attitude, approach to risk taking, morals etc. and your answers are analysed to see if you are the "right stuff". If you are given one to do, pat yourself on the back, you are well on your way to getting a job.
To answer such a test, just blast away at it as quickly as you can. The marking paper will generate some B******T answer. Accept it, say thank you, say how pleased you are to be in the recruitment process and then ask when can start.
PM