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Marvin Grosswirth

Abbie F. Salny, Ed.D., is the Supervisory Psychologist of American Mensa, has written many bestselling puzzle books, including The Mensa Genius Quiz Book. Members of Mensa have all scored in the top two percent of the population on a standard intelligence test.

Alan Stillson is puzzle editor for the Los Angeles chapter of American Mensa, Ltd., whose members have all scored in the top two percent of the population on a standard intelligence test.
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