"Everyone has a degree of negative emotionality," said Duncan B. Clark, a psychiatrist, psychologist, director of the Pittsburgh Adolescent Alcohol Research Center, and lead author of the study. "This is not a disorder or a categorical trait; it is the degree to which an individual reports certain emotional characteristics."

However, I would not go so far as to say these health problems were 'all in their head.' Anxiety and depression have been shown to cause demonstrable physical changes."

making false statements that make them look better compared with others (”good faking”).