Sociopathic personality disorder, which had been the term for psychopathy, was renamed Antisocial Personality Disorder. The dark triad of personality consists of psychopathy, Machiavellianism and narcissism. It is one of the dark triad traits, along with narcissism and psychopathy. Narcissism has also been found to have a significant correlation with psychopathy. Vaknin has a prolific online presence, writing on narcissism and psychopathy. There was a strong negative correlation showing that psychopathy and affective empathy correspond strongly. People that scored highly on psychopathy measures were less likely to portray affective empathy. Trolling correlated positively with sadism, psychopathy, and Machiavellianism. Pathological lying is in Factor 1 of the Psychopathy Checklist (PCL). An influential figure in shaping modern American conceptualizations of psychopathy was American psychiatrist Hervey Cleckley. There are moderate to high correlations between psychopathy rankings from late childhood to early adolescence. Evolutionary psychology researchers have proposed several evolutionary explanations for [[psychopathy]]. Machiavellianism is also significantly correlated with psychopathy. Individuals with psychopathy show reduced autonomic responses to instructed fear cues than otherwise healthy individuals. Fluctuating asymmetry has also been studied in relation to psychopathy.