In this episode, we discuss “reflective function,” which is a precursor to the concept of mentalization. Reflective function is best understood not as synonymous with mentalization, but as a scale from -1 to 9, based off certain adult attachment interview questions that measure the person’s ability to describe their own and others’ internal states, motivations, and articulate a nuanced and unique understanding of life from 0 to 12 years old. This scale was developed by attachment researchers at the University of London, including Dr. Howard Steele and Dr. Peter Fonagy.