Humanistic: Carl Rogers and Abraham Maslow. Not only observable behaviours and the difference between animals and human. (hippies)

Cognitive Psychology: Many. How we perceive, process, and remember information and how thinking and emotion interact (including with disorders)

Social Psychology: Many. How we think about, influence, and relate to one another. (People act different depending on social situations) (Gender)

Positive Psychology: Martin Seligman. Emphasis on being happy and human flourishing/fulfillment. (Expansion of Humanistic)

Bio-psychological Approach: Looks at all elements (biological, psychological, and social-cultural) for a more complete and complex picture.

Evolutionary Psychology: Charles Darwin. Natural selection influences roots of behaviours.