Book “Without Conscience” by Robert Hare who is a real psychologist has simple tips on recognizing them. Not purely by photographic appearance but it is not too hard. Example with eye contact they tend to stare too long.
Book “Without Conscience” by Robert Hare who is a real psychologist has simple tips on recognizing them. Not purely by photographic appearance but it is not too hard. Example with eye contact they tend to stare too long.