Skip to content

Questions about Psychopathy

Short answers, pulled from the story.

When did Hervey M. Cleckley publish The Mask of Sanity?

Hervey M. Cleckley published the book titled The Mask of Sanity in 1941 at a Veterans Administration hospital in Georgia.

What is the average score for psychopathy found in North American prisoner samples?

An average score of 22.1 has been found in North American prisoner samples while 20.5 percent scored 30 or higher on the Psychopathy Checklist Revised.

How does brain structure differ in individuals with high psychopathy scores?

People scoring 25 or higher on the PCL-R show significantly reduced mean microstructural integrity in their uncinate fasciculus and an approximate 18 percent smaller amygdala size compared to others.

What percentage of homicides committed by those with psychopathy were primarily instrumental according to a 2002 study?

A 2002 study reported that almost all homicides committed by those with psychopathy were primarily instrumental accounting for 93.3 percent of cases compared to 48.4 percent for non-psychopathic offenders.

Why do researchers question how psychopathy results apply to women?

Research on psychopathy has largely been done on men and the PCL-R was developed using mainly male criminal samples raising questions about how results apply to women.