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The test involves the orientation of a tilted rod to the physical vertical when it is surrounded by a tilted frame.
Testees are required to sit in a dark room where a square frame was placed with a rod in it. To be specific, both the rod and the frame are glowing so that the testees can see them. The researcher can adjust the angles of tilts of the rod and the frame as well as the testee’s chair. The testees are asked to adjust the rod to make it perpendicular (which should form a 90 angle with the floor). If they succeed in doing so, he would be considered as field-independent, while those who adjust the rod and make it perpendicular with the lower edge of the frame then he will be considered as field-dependent.