• An individual’s unique constellation of consistent behavioural traits.• Durable disposition to behave in a

particular way in a variety of situations.• Common Personality traits : Honest,

Moody, Friendly, Impulsive

BIG FIVE PERSONALITY MODEL Robert McCrae and Paul Costa

EXTRAVERSION

• Captures the comfort level with relationships

• Open• More Accessible• Outgoing• Sociable• Affectionate

AGREEABLENESS

• Tendency to get along with others

• Co-operative• Trusting• Warm• Likable• Care about others

CONSCIENTIOUSNESS

• Measure of reliability• Organized• Self Disciplined• Scrupulous• Careful• Preserving

NEGATIVE AFFECTIVITY

• Tendency to experience negative emotions & moods

• Unemotional• Even tempered• Comfortable• Calm• Secure

OPENNESS TO EXPERIENCE

• Tendency to be original• Broad Interests• Imaginative• Curious• Original• Daring• Risk Takers

SIGNIFICANCE

• Establishment of a taxonomy that demonstrates order in a previously scattered and disorganized field

• Influence from both heredity & environment (in almost equal proportions)

WEAKNESSES

• Not powerful in predicting & explaining actual behaviour

• Does not explain all of human personality

• Data driven, not theory driven

• Not fully orthogonal• Relies on self report

questionnaires and self report bias

RESEARCH IS ON……..

• Are five factors the right ones?

• Which factors predict what?

• Make a model on personality