Magnitude Estimation as a Method for Scaling the Social Value of Human Recognition

Berne Eric. Transactional analysis in psychotherapy. New York: Grove Press, 1961.

Cooper T. & Kahler T. An eightfold classified system for strokes and discounts. Transactional Analysis Journal, 1974, 4 (3), 30–31.

James M. & Jongeward D. Born to win. Menlo Park, California: Addison-Wesley, 1971, 46–50.

See Stevens for methodological details and justification. Stevens S.S. Psychophysics and social scaling. Morristown, N.J.: General Learning Corporation, 1972.