7The technical, human, and conceptual skill classification is form Robert L. Katz, “Skills of an Effective Administrator,” Harvard Business Review, September-October 1974.pp.90-102. The diagnostic skill is form Ricky W. Griffin, Management (Boston: Houghton Mifflin, 1984), p. 21. The political skill is form Cynthia M. Pavett and Alan W. Lau, “Managerial Work: The Influence of Hierarchical Level and Functional Specialty,” Academy of Management Journal, March 1983, p.171.
