Brunner explains that the five main dimensions of personality are: 1) Neuroticism: level of stability versus instability, 2) Extraversion: tendency to be assertive, sociable and energetic 3) Openness—disposition to be curious, open to new situations, and imaginative, 4) Agreeableness—disposition to be cooperative, supportive, trusting, and 5) Conscientiousness—disposition toward intentional, purposeful, and goal-directed behavior. These factors are dimensions, not types, so people vary on them all the time, and most people fall somewhere between the extremes. McRae and John argue that the Big Five are not a complete theory of personality…there are too few factors. Many have argued that five factors are not enough to summarize everything we know about individual differences