How do you typically think, feel, and behave? Personality can be measured using the Big Five which consist of 5 main traits; Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism. These traits are used to predict personalities all around the world. One main thing I found to be fascinating was the case study of Jack and Oskar, two identical twins that were separated at birth. They reunited many years later and found their personalities to be almost identical but their political views differed greatly. Where they born with these similar personality traits? If so, how did they maintain such similar traits when they were apart for so long? These are questions that arise and are answered as you read through chapter 14.