Falk and L. Csikzentmihalyi, M. Flow, New York: Harpers; 1990

Summary: This book describes a theory of inherently-rewarding activities. Csikzentmihalyi begins by researching why people pursue activities for which they are not paid. He then identifies certain feelings the subjects when they are engrossed and encapsulates them with the name flow. It then forwards a prescription for the deliberate use of such activities for improving one's quality of life.

Use: Csikzentmihalyi shows how important the quality-of-life and inherent-rewarding aspects of learning are, tempering my original economic-only approach. I am also convinced that my service has built-in psychological reinforcement since it is based on learning.