Functional Order: Te/Ni/Se/Fi
Dominant Function: Te
Bateman is a highly successful business man and focused on having the same success in all aspects of life. He also loves claiming control over all things, even the people in his life. His complete day is structured, starting with his morning routines and gymnastics. He prides himself on his efficiency and looks down on those, who aren‘t as successfull as him.
Auxilliary Function: Ni
Patrick becomes increasingly delusional over the course of the story and struggles to separate reality from his strange visions and dreams. He is often fixated on things to the point of obsession and successful for his visionary take on business. Through his focus on the bigger picture he often looses his sense of groundedness though.
Tertiary Function: Se
Beneath his sophisticated exterior Patrick is rather vain and spends hours on his daily beauty rituals and crafting his body to perfection. He is also very physical and bold, enjoying filling the room with his presence wand being in the spotlight. While being pragmatic in his business he fails to apply this realism to other aspects of his life often acting hedonistic and without c9nsidering the consequences.
Inferior Function: Fi
Bateman is unable to process his deep emotions or communicating them, often maintaining a jovial or stoic fassade, while feeling empty inside. He still cares for a selected few, like his secretary, but is mainly focused on his narcissistic desired, showing deeply underdeveloped and unhealthy Fi. While much of his humanistic and political comments during the movie seem fake, there might be some true convictions beneath it in some of them, showing that has indeed some sort of moral compass, even if it is a very twisted one.