Why has the definition of Type A behavior changed since the 1970s?
A) Politics have influenced how Type A behavior is defined.
B) Research has led to the changes.
C) The scientists researching this issue have a hard time making decisions.
D) Those subjects with heart disease now have very different personalities than those of the 1970s and 1980s.

Question

Quizplus · Accepted Answer

The definition of Type A behavior has changed since the 1970s due to research that has been conducted on the topic. As more studies have been carried out, new information and understanding have been gained, leading to a revised definition of Type A behavior.

Why Has the Definition of Type a Behavior Changed Since