Psychopathic inferiority?

How did Julius Ludwig August Koch define psychopathic inferiority?

Per Psychology Today

“Taking a step closer to our modern understanding of the term, in 1891 Koch, beginning to expand from the general “psychopath,” suggested that “moral insanity” be replaced with “psychopathic inferiority.” Koch preferred “inferior” as it indicated the personalities deviated [unfavourably] from the norm”