Effects of field-dependent cognitive style on optokinetic illusion.
OBJECTIVE
To study the effects of the field-dependent cognitive style on optokinetic illusion.


METHODS
One hundred military university students were tested with Rod and Frame Test. Fifteen high score subjects and 15 low score subjects were arranged into field-dependent group and field-independent group respectively. Each subject experienced a series of optokinetic step stimulation (5, 10, 15, 20, 30, 40, 60, 80, 100, 120 degrees/s) for 20 s. The latent period and fuzzy estimate magnitude of the illusion were recorded.


RESULTS
The results obtained were as follows: 1) The latent period in the field-dependent group were shorter than that in the field-independent group, and decreased exponentially with the stimulation. The latent period in the field-independent group decreased linearly with stimulus; 2) Between 5-120 degrees/s, the fuzzy magnitude of the two groups regressed to two linear equations, no significant difference was found between the coefficients of two equations, but the intercepts were significantly different.


CONCLUSIONS
Cognitive style was found to be an important influencing factor on optokinetic illusion. People with the field-dependent cognitive style were susceptible to optokinetic illusion.
Department of Psychology, Faculty of Aerospace Medicine, The Fourth Military Medical University, Xi'an.
Wang-hong
WH
Shi
Wei
W
Wang
Gui-qin
GQ
Wang
Zu-huai
ZH
Cheng
Xiao-ying
XY
Wang
En
E
Huangfu
D000054:Acceleration; D000293:Adolescent; D000328:Adult; D000337:Aerospace Medicine; D003071:Cognition / Q000502:physiology*; D006801:Humans; D007088:Illusions / Q000502:physiology*; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*; D012399:Rotation