Biological Theory of Personality

The biological theory of personality delves into the formation of personality through the lens of biological foundations. Central to this perspective is the notion that biological factors play a substantial role in shaping personality, encompassing recent and distant influences, such as physiological mechanisms, genetic underpinnings, and evolutionary origins.

Physiological mechanisms encompass the impact of the body’s structure and function on individuals, ranging from macroscopic aspects like body shape and cardiopulmonary function to microscopic elements such as molecular structure and biochemical metabolism. The central nervous system, in particular, plays a decisive role in this interplay. In the mid-twentieth century, American physiologist Roger Wolcott Sperry made significant strides in understanding the functional asymmetry of the left and right hemispheres of the brain through split-brain research. This research unveiled the influence of lateralization on personality, where...