Īn inferiority complex may cause an individual to overcompensate in a number of ways. Īccording to Alfred Adler, a feeling of inferiority may be brought about by upbringing as a child (for example, being consistently compared unfavorably to a sibling), physical and mental limitations, or experiences of lower social status (for example, being treated unfavorably by one's peers). In psychology, inferiority complex is a consistent feeling of inadequacy, often resulting in the belief that one is in some way deficient, or inferior, to others.