Abstract
Eleven age groups of 22 each were shown the Necker cube illusion on three separate trials, using a different instructional set for each. Frequency of reversals was determined by the number of times the subject indicated that the “X” on the cube changed perspectives during a 90-sec trial. The results of a 3 by 11 analysis of variance revealed a.01 level of significance between the peak age groups, 25 and 45 years, and the 55-, 65-, 75-, 85-, 95-, 5-, and 10-year-old groups. These data suggest that young and old people were less able to reverse visual perspectives than the middle age groups.
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