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Effects of physical, mental, and vigilance fatigue on the autokinetic reports of 48 undergraduate students are described. Eight response measures were taken of the subjects with an apparatus that permitted recording of the apparent motion of the autokinetic stimulus in the same plane as the light source. Presence of the fatigue states was verified by independent measurements. Fatigue conditions facilitated quick and continuous perception of the autokinetic movements. The most perceptual complexity in the patterns of apparent motion was observed under mental fatigue followed by physical and vigilance fatigue, with least in the neutral condition.

The relationships of autokinesis to personality traits for 40 undergraduate students of Delhi University is described. Eight response measures were taken from the subjects on an apparatus that permitted recording of the apparent motion of the autokinetic stimulus in the same plane as the light source. Personality traits of suggestibility, perseveration, oscillation, and personality dimensions were respectively assessed by body-sway test, Necker's Cube, perseveration test, and the MMPI. Analysis indicates no significant relationships between autokinetic phenomena and the various personality traits.