A study of estimates of intelligence from photographs.

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Abstract
The authors used a set of ten photographs of students who had been given a standard intelligence test. Three hundred and seventy-six subjects, persons of all sorts, were asked to arrange them in order of intelligence. Over half of these persons had been tested themselves so that it was possible to discover how their judgments correlated with their intelligence. The results show that the average of judgments is no better than luck; that intelligence on the part of those judging makes no difference; and that even if a judge does well on the first trial he is likely to do badly in arranging another set of pictures. Sets of two pictures each were also used, and here again it was also found that the judgments were merely a matter of luck. The same thing held true of persons working together, and of a professional "character reader." From Psych Bulletin 22:12:00911. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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