Is made up of stable internal factors that are relatively constant over time and that account for individual differences in behaviour
4 Major theories of Personality
i) Psychoanalytic Theory
ii) Behavioural Theory iii) Humanistic Theory
iv) Biological Theory
Causal pathways
• Health behaviours and habits • Number and quality of social relationships
• Reactions to challenges and psychophysiological stress
• Situation selection and evocation (recalling)
Nom-causal pathways
• Genes and early experiences • Disease-caused personality changes