Twenty-six field dependents and twenty-six field independents, based on their performance on the Rod-and-Frame Test, were selected as subjects for the present study. They participated in experiments which were designed to test hypotheses derived from the author´s main assumption that the difference shown in the measures of field dependency is mainly due to difference in the ability of space orientation or the ability to utilize bodily experiences. The findings were as follows: (1) Even in the absence of the frame, the mean error score was significantly greater for field dependents than that for field independents, when they were asked to adjust the rod in dark box to be upright. (2) The mean test score of Space Relationship for field dependents was significantly lower than that was for field independents. (3) Under the suggestion of the experimenter through minimal discourager ("Oh, my!") and minimal encourager ("uh-huh!"), field dependents showed significantly larger GSR deflection than field independents did. These evidence could be seen as positively supported the author´s assumption. Two other hypotheses, however, were not supported. Being asked to guess the "up" and "down" of their own GSR waves, field dependents missed no more than field independents did. And the percentage of subjects who had experience of autokinetic illusion among field dependents was not significantly higher than that was among field independents. Thus, some possible causes of this part of result and ways of possible improvement for further study were discussed.