The Big Five Personality Traits theory gives a simple blueprint to understand others and improving relationships by knowing why people tend to behave the way they do. You can also use this theory to help better understand yourself and how to get along with others better than ever before. The Big Five Model, is also known as the Five Factor Model, is the most widely accepted personality theory held by psychologist today. The theory states that personality personality can boil down to five factors, known as the acronym CANOE or OCEAN (conscientiousness, agreeableness, neuroticism, extraversion). Unlike other trait theories that sort individuals into binary categories (introvert or extrovert), the Big Five Model asserts that each personality trait is a spectrum. Therefore, individuals are ranked on a scale between two extreme ends.