He used physiological and behavioral measures during couples' interactions to predict relationship success and found that five positive interactions to one negative interaction are needed to maintain a healthy relationship. He established a therapy intervention for couples that focused on civil forms of disapproval, a culture of appreciation, acceptance of responsibility for problems, and self-soothing (Gottman, Driver, & Tabares, 2002[86]). Relationship behaviors Recent research suggests that romantic relationships impact daily behaviors and people are influenced by the eating habits of their romantic partners.