Abstract
College Ss were selected as field dependent or independent and then given a “signal-detection” version of the rod-and-frame test. Receiver operating characteristic (ROC) curves were calculated for each S’s performance under three exposure durations, two luminance levels, and two frame tilts. Like children in a previous study, some Ss responded independently when the frame was tilted 28 deg but dependency at 8 deg. Analysis resulted in significance for all main effects and for interactions of dependency classification with duration, with tilt, and with tilt and luminance. Experiment 2 checked the possibility that Ss who were classified differently were differentially sensitive to the perception of vertically, quite apart from the field. Experiment 3 manipulated the interval between frame offset and rod onset. Results show that dependents were profoundly influenced by the frame, even 2,500 msec after its termination.
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