Well, you are not really clear yet. For example, you could make a personality trait that includes fans of ball sports. This would be due to the inclination they would have to such framing.

Same as a gear head, someone into cars and mechanical objects.

So, the personality traits we understand are more encompassing than a single end point and the end point selected is likely a function of the social sphere.

So, when it comes to forming and creating personalities in this design its obvious and clear. When we want to compare it to say a illogical or irrational frame of mind, we can look to traits that include the desire to inflict harm on others for example.

This is something that is fairly well proven and because the logic and reasoning components of this particular trait set is not acceptable we can determine it to be a mental disorder.