Team Synergy The frequency with which team members mirror each other's positive non-verbal cues (such as nodding or leaning forward simultaneously) is often viewed as a sign of high group cohesion and successful collaboration. A social psychologist wants to conduct a study using the observation method to investigate this by studying the interaction of work groups collaborating in a busy open-plan co-working space. Group behaviour was observed every 15 minutes during a collaborative session from 2 pm to 5 pm.