The document discusses several theories of personality and how they relate to consumer behavior, including:
1) Freudian and neo-Freudian theories which focus on unconscious needs and social relationships influencing motivation and development.
2) Trait theory which sees personality as a set of measurable psychological traits.
3) Research finding consumer purchases reflect aspects of their own personality.
It then examines several personality traits like innovativeness, dogmatism, and stimulation levels that influence consumer preferences for new or established products.