What instruments and criteria do you use to measure relationships health?

At The Relationships Research Institute we measure relationships health by using psy-to-nomics methodology. It enables us to perform individual assessments and determine personality types of those involved, to then further correlate individual behaviors and relationships engagement with each other. 

What are the main components that influence behavior?

To us the main components are: individual personality traits (inborn qualities), temperament of an individual, behavioral and linguistic patterns that transpired, epigenetic programs, dietary habits, sport habits, and ability to be empathetic.