Mental theory

An easier way to say Theory of mind.
In psychology, mental theory refers to the capacity to understand other people by ascribing mental states to them. This includes the knowledge that others' mental states may be different from one's own states and include beliefs, desires, intentions, emotions, and thoughts. Possessing a functional theory of mind is considered crucial for success in everyday human social interactions. People use such a theory when analyzing, judging, and inferring others' behaviors. The discovery and development of mental theory primarily came from studies done with animals and infants. Factors including drug and alcohol consumption, language development, cognitive delays, age, and culture can affect a person's capacity to display theory of mind.

Dude has no mental theory, he really thinks I don't know this.