Certainly neither of us is the ideal one to ask the question to, but perhaps I can point you in the right direction.
With respect to the efficacy of psychological testing to pick up things of the nature you've identified, likely the best people to talk to are the directors of health policy. The medical recruiting office falls under their responsibility and could very likely provide you with some information, or could at least point you in the right direction with respect to that specific area.
In a wider sense, on the actual recruiting process and the screening associated with that, the director general of recruiting and military careers or the commander of the Canadian Forces recruiting group would be the most likely sources for answering those questions more effectively.