Psychopaths excel at deceptive facial expressions

A reader sent me a link to the article "Would I lie to you? ‘'leakage’' in deceptive facial expressions relates to psychopathy and emotional intelligence."  In the study, researchers tested the ability of psychopaths and those with high emotional intelligence ("EI") in emotional deception.  Here are some fascinating highlights (citations omitted):

• Emotional deception via the alteration of facial expressions can occur in three ways : simulating an expression involves adopting an expression in the absence of any real emotion; masking an emotion involves replacing a felt emotion with a different emotional expression; and neutralizing an expression involves concealing a felt emotion with a neutral face.
• Some psychopathic individuals are chameleon-like actors and appear to use their acting skills to effectively manipulate others in various interpersonal contexts. In corporate settings, white-collar criminals with psychopathic characteristics, such as Bernard Madoff, often find easy victims by appearing trustworthy, empathetic, and kind. Psychopathic offenders can readily feign remorse and a pro-social attitude to manipulate their way into lower sentences (i.e., manslaughter rather than murder), permissions to appeal their sentences, and undeserved conditional release. Despite their much longer criminal histories and poorer conditional release histories, psychopaths are 2.5 times more likely than non-psychopaths to be released when they apply for parole . Further, these decisions are faulty; psychopathic offenders in both studies spent fewer successful days on release compared to non-psychopaths released. In fact, extended interpersonal contact with a psychopath can lead to less accurate perceptions of psychopathic traits.  
• Despite evidence that psychopathic individuals are successful manipulators, the manner in which they deceive and manipulate others is open to question. Psychopathy arguably is associated with effective emotional deception. The psychopath’s distinctive lack of emotional experience may prevent emotional ‘‘interference’’ in feigning emotional displays. That is, because of the lack of real emotion, there may be less genuine emotion ‘‘leaking’’ onto the false face during a fabricated emotional display. In support of this prediction, Herpetz et al. (2001) found that psychopathic offenders exhibited fewer and less intense facial expressions in response to pleasant and unpleasant emotional images relative to controls. We predict that psychopathic individuals, particularly those with strong interpersonal-affective features of the disorder, will have an advantage when attempting to control their facial expressions during deception because of their lack of emotion; such individuals may express less ‘‘leakage’’ of genuine emotion during deception. However, due to emotional recognition deficits and a lack of understanding of what a sincere expression ‘‘looks like’’, these individuals will not necessarily be proficient at creating a facial expression consistent with the feigned emotion.
• As predicted, psychopathic traits – specifically, high levels of interpersonal manipulation – were related to shorter durations of unintended emotional ‘‘leakage’’ during deceptive expressions. In contrast, the erratic lifestyle element of psychopathy predicted greater emotional inconsistency during deceptive displays.  Individuals higher in EI – specifically, the ability to perceive and express emotion – feigned emotions more convincingly than others but were not more immune to emotional leakage.

In other words, psychopaths are the best at not letting other actual emotions interfere with the feigned emotion (presumably because the psychopath does not have strong feelings to suppress), but that people with high EI did a better job mimicking actual emotion (presumably because they know better what those emotions look/feel like).