SFG-04: TRANSITIVITY: THE BEHAVIORAL, MENTAL, AND VERBAL PROCESSES 

The Behavioral, Mental, and Verbal Processes are the three processes which likely to occur in a daily communication. When someone sees, hears, or feels something/someone and processes the phenomenon/information, s/he undergoes a mental process. He may react subconsciously to the phenomenon/information, and, thus, produces a behavioral process. He may also react to the phenomenon consciously and produce a verbal process.
This video discusses the three processes with examples from Yìchén's and Vicky's relation.