Sentence:  Next Review Interacting Minds--A Biological Basis Chris D. Frith, 1  Uta Frith 2 The ability to "<WSD>mentalize</WSD>," that is to understand and manipulate other people's behavior in terms of their mental states, is a major ingredient in successful social interactions. 
Meaning of the word marked with <WSD> tags:  To understand the behavior of others as a product of their mental state