Three groups of 120 male and female students each, aged 13 to 15 yr., 16 to 18 yr., and 19 to 21 yr., were tested on Oilman's portable rod-and-frame apparatus to assess field dependence. Analysis indicated that the 16- to 18-yr.-old group was more field independent. Developmental trends indicated decreased field-dependence into late adolescence, and then a reversal indicating an increase in field-dependence beginning in early adulthood (19- to 21-yr.-old group).
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