Final answer:
Friedman and Rosenman labeled individuals who exhibited certain characteristics as Type A personality. Type A behavior pattern is associated with a higher risk of heart disease.
Step-by-step explanation:
Friedman and Rosenman labeled individuals who exhibited a strong desire for recognition, competitiveness, and a constant rush to finish tasks as quickly as possible as Type A personality. They noticed these characteristics in patients who sat on the edge of their seats in the waiting room. Research has shown that Type A behavior pattern, characterized by an aggressive and chronic struggle to achieve more in less time, is associated with a higher risk of heart disease.