Sociopsychopathicosis

John Seabrook, in the 10 November New Yorker, writes about a Dr. Kent Kiehl using MRIs to study psychopaths' brains in prisons, in "Suffering Souls." Some of the more interesting bits of information, from a perspective outside the realm of psychology, comes in the history sections of the articles. For instance, in the 1920s and 30s, psychopathic beahavior was thought to occur more due to external rather than internal forces, and

“sociopath,” coined in 1930 by the psychologist G. E. Partridge, became the preferred term. In 1958, the American Psychiatric Association used the term “sociopathic personality” to describe the disorder in its Diagnostic and Statistical Manual of Mental Disorders. In the 1968 edition, the condition was renamed “general antisocial personality disorder.

Psychopath means "suffering soul", and altho sociopath refers to the same thing, it would appear to not have so much a real etymology so much as a fabricated history. That is, "sociopath" would have no sensible meaning looking at its Greek origins.