Julius Ludwig August Koch

Julius Ludwig August Koch ( , ; 4 December 1841 in Laichingen, Württemberg – 25 June 1908 in Zwiefalten, Württemberg) was a German psychiatrist whose work influenced later concepts of personality disorders.

Koch was born in the town of Laichingen in the state of Württemberg. His father was a general practitioner physician who headed his own private insane asylum.

Koch worked as a chemist for several years and then studied medicine in Tübingen from 1863 to 1867. He subsequently worked as a physician, later joining a psychiatric hospital. In 1874 he became director of the state mental hospital in Zwiefalten (Württemberg).

Koch retired in 1898.

Legacy

In Germany, Koch's term was generally shortened to 'minderwertigkeit' (inferiors), used interchangeably with 'degenerate', and applied mainly to criminal types. After World War I psychiatrists dropped that term and used psychopathisch instead, and its derivatives Psychopathie and Psychopathen. This was actually an attempt to avoid assumptions of biological, moral or social inferiority, and instead be neutral and 'scientific'. Koch's theories had been only loosely linked to degeneration theory and so survived the declining popularity of that theory after the war. The concept of psychopathy initially referred to not just antisocial behaviors but to a wide range of issues which later were classified in the category of 'personality disorders'. Around the same time, Austrian Alfred Adler was developing his idea of the inferiority complex, which became widely known.

Some of the psychopathic inferiorities were later recast as abnormal personalities by Kurt Schneider, and a number of the conditions have ended up known today as personality disorders. The term psychopathy itself gained a specific and notorious meaning of a condition of amorality and anti-social or violent behaviour. Such a morally pejorative concept is said to have not been intended by Koch; he had applied the term 'psychopathic' to mean originating from an organic defect in the brain, and the term inferiority to simply refer to dysfunction. However, it was probably his concept and terminology that provided the unfortunate conglomeration of aspects of inferiority, amorality and socially harmful behavior.