Cardiovascular reactions during psychiatric interview. A non-invasive study on a twin sample

A sample of 18 monozygotic and 13 dizygotic male twin pairs in the ages 51-74 (mean 62) was exposed to a stressful psychiatric interview. Genetic influence over blood pressure and peripheral pulse volume was observed to be most evident at the end of the interview, while heart rate was genetically strongly influenced both at rest and during the whole interview.