Evolutionary psychology, within psychology is a theoretical perspective that investigates cognition and behavior through a contemporary evolutionary lens. Its focus is on discerning the psychological adaptations of humans in response to the ancestral challenges they evolved to address. The discipline aims to recognize human traits shaped by natural or sexual selection. The theories and principles derived from evolutionary psychology hold significance in various domains such as psychiatry, economics, literature, environment, politics, and more. Various strategies have been devised to determine whether a psychological trait is an evolved adaptation, random variation, or a byproduct. These strategies encompass cross-cultural consistency, form-to-function analysis, function-to-form examination, assessment of current evolutionary adaptiveness, and the investigation of corresponding neurological modules. It presents the complex subject of evolutionary psychology in the most comprehensible and easy to understand language. This book studies, analyzes and upholds the pillars of evolutionary psychology and its utmost significance in modern times. It will provide comprehensive knowledge to the readers.