Susceptibility to motion sickness and ego closeness, ego distance as measured by the autokinetic response tendency.

This paper reports results from one phase in an ongoing study of the relationship between vestibular function and various aspects of personality, cognitive style and symptom formation in mental illness. In the experiment reported here a measure of autokinesis was shown to relate to motion sickness experience as judged by actual stimulation in a rotating chair. Low and intermediate sensitive subjects showed less autokinesis than the most motion sick individuals (two-way analysis of variance F = 5.735, P = 0.006). Males in this sample showed a significantly greater autokinetic tendency than females (two-way analysis of variance F = 6.995, P = 0.011).