So psychodynamic manual is supposed to be NOT behavioral. Yet it's description is still behavioral.
Obsessive is described as conscientious boring living machine STEM dude. But they don't explain why they have to be both conscientious AND boring to be obsessive. If you are conscientious and funny then that just being cool twice.
For example, parents tell you that a good student must focus on study. What would you do when you have a crush on a boy?
You might think that your parents, though with good intentions, have wrong opinions. But that's your parents. They feed you. Now, can they both love you and get off your back? It seems like a mature response to be depressive. But bearing differences is not easy. Especially if you are too different from too many people.
To think that if you have different opinions as your caregivers, they will take their love and protection away. Therefore they must remain the most loving parents with the most righteous views. It would be sinful of you to believe otherwise. That's splitting. However, it only guarantees how you try to convince yourself, not how you actually conduct yourself. Splitters carry that same idealization and then devaluation to everyone else later in life, whether coworkers or neighbors.
Then there is the middle ground where you think your parents want good things for you, you should listen to them. Yes, it works well for you. Now your libido is zero. But what about other kids who have crushes on boys? How should you think about them? Is their morality corrupt? Do they have bad parents? Now you feel icky every time they walk past your class. Even when obsessive grows up and learns to be progressive and sex positive, they still carry the same mentality of weighing which option is the RIGHT thing to do. Even when they are encouraging their depressive friends, the depressive ones still feel it's a judgement rather than empathy.