I did take a psychological and career test at a testing location in the Detroit Area. The test was quite extensive about 4 hours of testing and then the results were reviewed by a professional psychologist who also asked probing questions.
Overall the test was broken down in regards to Math skills, English competency, Interpersonal Skills and some general knowledge questions. The test was given in sections in a private office and their was a time limit to complete the different areas of concentration.
The math part of the test was pretty simple and clear cut however I knew I would not have a chance to complete it in the time given so I quickly only worked on problems where I felt I had a good chance of success and did not require a lot of time.
The English part of the test was quite basic and most any one with a high school education would have no problem with passing.
The psychological part of the test was the most difficult as there were a number of questions that would lead back to how you answered some of the other earlier questions...Many questions on team work, ability to be a team leader, how teams function etc for the best results.
The actual interview with the psychologist was a bit awkward as it was apparent he was trying to find out more about the test answers but doing so by asking a battery of seemingly unrelated questions.
The most interesting question was when he asked about a job related team activity that failed because of something that the team leader had done. This was followed on how you would handle the same situation and why if you were the team leader. Since I was offered the position I assume I did well in the test.