Paul Ekman and Mark G. Frank | Lies That Fail
Ekman and Frank look specifically at lies that fail due to the behavior of the liar. Most of these lies are betrayed by failures in thinking, such as internal inconsistencies, or in emotions, such as falsely portraying or concealing feelings. Emotions also become entwined with lying, such as fear of being caught and guilt about lying. Ekman and Frank consider numerous ways to detect deception apprehension and the types of relationships between liars and their targets.
-Reliable signs of emotion that few people can mimic include
A) moving lip corners up in a smile.
B) contracting the eye muscles while smiling.
C) narrowing the lips in anger.
D) both b and c

Question

Quizplus · Accepted Answer

Contracting the eye muscles while smiling (B) and narrowing the lips in anger (C) are reliable signs of genuine emotions that are difficult to mimic.