Gebhart, J Heart rate response as indicator of mental strain: interaction of personality and situational factors. [electronic resource] - Activitas nervosa superior Sep 1990 - 174-8 p. digital Publication Type: Journal Article ISSN: 0001-7604 Subjects--Topical Terms: AdultArousal--physiologyDecision MakingExtraversion, PsychologicalHeart RateHumansIntroversion, PsychologicalStress, Psychological--physiopathology