The Like Switch | ESSENTIAL | 2026 |

How well you satisfy another person’s psychological or physical needs through verbal and nonverbal behaviors. 2. The "Friend-Foe" Continuum

The physical distance between you and another person. Simply being in someone's presence consistently—even without speaking—lays the groundwork for a connection. The Like Switch

The number of times you have contact with the person over a specific period. How well you satisfy another person’s psychological or

The length of time spent together during each encounter. The cornerstone of the book is the ,

The cornerstone of the book is the , which breaks down the natural development of relationships into four measurable components:

, a former FBI behavioral analyst, provides a comprehensive framework for building rapport and influencing others. The report below details the core strategies he developed for profiling threats and recruiting spies, adapted for everyday social and professional success.

In his book Dr. Jack Schafer