A Psychophysiological Examination of the Mutability of Type D Personality in a Therapeutic Trial

Abstract. Identifying the associations between health and personality has been a focus for psychophysiological research. Type D is associated with predisposition to physical psychological ill-health. This statistician-blind parallel-group controlled trial (intervention group vs. waiting list control group) examined impact of Havening Techniques on constituents negative affect (NA) social inhibition (SI). One hundred twenty-five adult (18+ years) participants in United Kingdom (72 females, 53 males) completed Scale-14 (DS14) measure at baseline (T1), 24-hours (T2), 1-month (T3). Forty treatment received additional stress biomarker assessment heart rate, blood pressure, salivary cortisol. caseness remained stable ( n = 57). In 68); NA, SI, total scores decreased from T1 T2 p < .001, respectively), T3 .004, significantly transmuting non-caseness .001 T2; .025 T3). Between T2, decreases cortisol .001), diastolic pressure systolic .001) were demonstrated. Heart rate fell nonsignificantly .063), but .048). The findings this study indicate potential mutability illness-prone characteristics personality.