Psychology is the science of mind and behavior. Psychology includes the study of conscious and unconscious phenomena, as well as feeling and thought. It is an academic discipline of immense scope. Psychologists seek an understanding of the emergent properties of brains, and all the variety of phenomena linked to those emergent properties, joining this way the broader neuro-scientific group of researchers. As a social science, it aims to understand individuals and groups by establishing general principles and researching specific cases. [1]

It encompasses the biological influences, social pressures, and environmental factors that affect how people think, act, and feel. Gaining a richer and deeper understanding of psychology can help people achieve insights into their own actions as well as a better understanding of other people.

A designer who doesn’t understand human psychologies is going to be no more successful than an architect who doesn’t understand physics.

— Joe Leech (Author - Psychology for Designers) 

UX is all about understanding people. By learning about psychology, you are at a point where you already have some familiarity about people in general and the reasonings behind their actions. 

- Geunbae "GB" Lee (Product Designer at Facebook)

Top courses  to learn Psychology in UX

It is advised from SMEs or mentors in UX field that UX folks should have knowledge and understanding about psychology factors and principle. In this article some of the top online courses listed which can help UX folks in start gathering knowledge about psychology. 

Psychology of Interaction Design: The Ultimate Guide

Introduction to Psychology -University of Toronto 

Introduction to Social Psychology

Fundamentals of Psychology

Gestalt Psychology and Web Design: The Ultimate Guide

Psychology of E-Commerce: How to Sell Online

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