Is it true that if a person does not yawn in response, then he is a psychopath?

 
Is it true that if a person does not yawn in response, then he is a psychopath? - Longpost, Interesting, Informative, Research, Brain, Проверка, Facts, The medicine, Reaction, Yawn, Behavior, Health, Person, My
Is it true that if a person does not yawn in response, then he is a psychopath? - Longpost, Interesting, Informative, Research, Brain, Проверка, Facts, The medicine, Reaction, Yawn, Behavior, Health, Person, My
Is it true that if a person does not yawn in response, then he is a psychopath? - Longpost, Interesting, Informative, Research, Brain, Проверка, Facts, The medicine, Reaction, Yawn, Behavior, Health, Person, My
Is it true that if a person does not yawn in response, then he is a psychopath? - Longpost, Interesting, Informative, Research, Brain, Проверка, Facts, The medicine, Reaction, Yawn, Behavior, Health, Person, My


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