physiological vs psychological

People often become confused with the terms physiological and psychological since both sounded similar. However, keep in mind that these two have different meanings as discussed briefly in this article.

  Physiological Psychological
Origin Greek word physis meaning nature and origin, and logos meaning study Greek word psyche ‘mind’ and ‘logos’ study
Common term                  “Physical”                      “Mental”
Definition Branch of study that pertains to mechanical and biological process of living systems        Study of perception, emotion,  behavior, condition amongst animals (human)
Famous Persons behind it Claude Bernard ‘Father of Physiology’ Wilhelm Wundt ‘Father of Psychology’


The word physiological is an adjective form that pertains to physiology. When it comes to this study, physiology derived from the Greek word ‘Physis’ which implies origin and nature. It is a scientific study on how living organisms functions or how are the body systems operate. It includes physical and chemical functions such as cells, organs, organisms, organelles and Biomolecular activities. Hippocrates is the first one who studied physiology during 420 B.C. This termed is first applied during 1525 introduced by Jean Fernel, who is a French physician. The theory of the cells during 1838 increases the physiological knowledge of the people as introduced by Theodor Schwann and Matthias Schleiden. A person who deals with the study of physiological is called a physiologist.


The word psychological is an adjective form that relates to psychology. In terms of the scientific study of how living organism used their cognitive functions, understand their behavior and personality as well as evaluate their mental states such as disorders and mental health abnormalities all of these gave rise to psychology. The first used of this term dates back on 1688. Psychologist used to refer to an individual or professional who studied psychology.


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