The ability to discern another's inner psychological state is known as:

The correct answer is perspective taking

Perspective taking refers to the ability to "step into someone else's shoes" and see the world from their point of view. According to the psychologist, Jean Piaget, the ability to take someone else's perspective typically develops around age six in children. Perspective taking stems from theory of mind- that is, the awareness that others have a mind of their own and their own way of perceiving the world that might be different from our way we do.