Optimistic, pessimistic, trusting and envious – these are the four major personality types that can be used to gauge the personality of the majority of people, a new study on human behaviour has ...

People love taking personality tests, but are personality types real? Maybe, and maybe not. Personality development is complicated, and most healthy personality types are not so easily defined. Your ...

The September 2016 study, "Humans Display a Reduced Set of Consistent Behavioral Phenotypes in Dyadic Games,” appears in the journal Science Advances. "Envious" Is the Most Predominant of Four ...

The Enneagram is a tool that defines nine personality types. Many individuals use it in various theoretical settings. The Enneagram of Personality Types is a modern tool that is based on various ...