This is the ability to realize that they and others think perceive things differently and hold their own private experiences and it is often lacking in children who fall on the autism spectrum

Answer

Theory of mind

Explanation

Theory of mind involves the ability to attribute mental states to oneself as well as others (Premack and Woodruff, 1978). People have differing beliefs and intentions that drive them to act the way they do, which is why recognizing that every individual has separate desires and beliefs is central to the theory of mind (Bora et al., 2009). There are certain clinical syndromes in early childhood such as autism whereby an individual is unable to react to expressions of others.