The amount tipped by 396 groups of restaurant diners was a function of the number of people eating together as well as the size of the bill. One-third of the variability in tipping was explained by the norm that tip should equal 15% of bill. In addition, consistent with a new theory of division of responsibility, variation around this norm was an inverse power function of group size, specifically, 18%/N'22.
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References
1.
How much to tipFortune, May, 1971, p. 94.
2.
Insult me, comrade!Newsweek, April 14, 1969, p. 112.
3.
Latané, B.Theory of social impactPsychonomic Society, St. Louis, 1973.
4.
Latané, B. & Darley, J.M.The unresponsive bystander: Why doesn't he help?New York : Appleton-Century-Crofts, 1970.
5.
Stevens, S.S.On the psychophysical lawPsychological Review, 1957, 64, 153-181
6.
Tab for 'eating out' was $38 billion in '73Chapel Hill Newspaper , December 6, 1974.
