The video gives you the idea of how a personality is developed and what you should consider when dealing with a person at each stage according to Erickson's theory.

Freud’s theory of psychosexual development claims that as we grow up, we pass through five critical phases which are defined by our sexual drive, also called libido, concentrating at specific erogenous zones.

Watch the video to get acquainted with Freud's theory.

Piaget's theory argues that we have to conquer 4 stages of cognitive development. Only once we have gone through all the stages, at what age can vary, we are able to reach full human intelligence.

Watch the video to familiarise yourself with Piaget's theory of cognitive development.


Vygotsky’s Theory of Social Development argues that community and language play a central part in learning. Vygotsky believed that children develop independently of specific stages as a result of social interactions.

Watch the video to know more about Vygotsky's theory of cognitive development.