Structuralism and functionalism have since been replaced by several dominant and influential approaches to psychology, each one underpinned by a shared set of assumptions of what people are like, what is important to study and how to study it.
Psychoanalysis, founded by Sigmund Freud (1856-1939) was the dominant paradigm in psychology during the early twentieth century. Freud believed that people could be cured by making conscious their unconscious thoughts and motivations, thus gaining insight.
Freud’s psychoanalysis was the original psychodynamic theory, but the psychodynamic approach as a whole includes all theories that were based on his ideas, e.g., Jung (1964), Adler (1927) and Erikson (1950).
The classic contemporary perspectives in psychology to adopt scientific strategies were the behaviorists, who were renowned for their reliance on controlled laboratory experiments and rejection of any unseen or unconscious forces as causes of behavior.
Later, the humanistic approach became the ‘third force’ in psychology and proposed the importance of subjective experience and personal growth.
During the 1960s and 1970s, psychology began a cognitive revolution, adopting a rigorous, scientific, lab-based scientific approach with application to memory, perception, cognitive development, mental illness, and much more.