If there are nine people in a room and every person shakes hands exactly once with each of the other people, how many handshakes will there be? How can you prove your answer is correct using a model ...

Tucker, A. L., and Amy C. Edmondson. "Managing Routine Exceptions: A Model of Nurse Problem Solving Behavior." Advances in Health Care Management 3 (2002): 87–113.

Mary Klinefelter’s Golden Rule Insurance Co. health plan said it would pay 100 percent of the costs associated with routine physical exams. Just to be sure, the Orland Park resident called Golden Rule ...

Our brains are much more active when we daydream than previously thought. Activity in numerous brain regions increases when our minds wander, according to new research. Psychologists found that brain ...