I have a personal interest in Psychology since I have a daughter with both bachelors and masters degrees in the field. Her first job was designing psychological tests for potential new employees. Her tests were designed to determine whether a person would fit the company agenda, whether they could get along with others, and if there were any deep seated issues which might cause the employer difficulties in the future; i.e., would they stay the course when the going is not so easy.
I personally don't understand how one asseses that but apparently it is doable. So this screening really reduces the difficulties for the employer and saves a huge amount of money that would be wasted otherwise.
Florida Tech trains/educates about 25 new clinical psychologists per year. Most of them don't design test; they do treat patients, however, and hence work the other end, i.e., trying to deal with problems once they are uncovered. It's a challenging world out there, maybe we should see if we can graduate a few more than 25.