Abstract: The psychological especially emotional characteristics of two caseswith congenital insensitivity to pain were investigated. in order to studythe relationship between emotion and pain, thus testifying the emotionaltheory of pain. Case Ⅰ, female, 10 years old, with subnormal intellig-ence and normal personality assessed. with the revised Junior EysenckPersonality Questionaire,has heavier fear-feeling than normal subjectsthat results from social. and educational factors, but lacks fear-feelingto physical injuries. She is very irritable, and used to have uncontroll-able temper-bursts. Her responses to sudden strong stimuli (e. g. bell-sound, light)are approximately normal. Case Ⅱ., male, 13 years old, withmoderate mental retardedness and normal personality, lacks all kinds offear-feeling. His everyday emotional status is euphoric. His verbal andmotor responses to sudden strong stimuli are normal, but without corr-esponding facial or autonomic nervous responses. Both cases are hyper-active, with aimless movements. The results indicate that some relationbetween pain and emotion exists, but the emotion theory of pain is notverified.

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