The phenomenon of beta movement allows us to perceive motion from a series of still images. What is necessary in order for beta movement to occur?
a) Each succeeding image must be presented before the memory trace for the preceding image has faded
b) Each succeeding image must activate a different portion of the visual field.
c) Each succeeding image must be viewed as a unified whole.
d) Each succeeding image must appear to be moving in space.
A
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Which of the following was once viewed as a form of "hysteria"?
A. Conversion disorder B. Dissociative identity disorder C. Dissociative fugue D. Hypochondriasis
Being left-handed appears to provide a somewhat greater-than-average probability of having _____
A) autism B) dyslexia C) multiple sclerosis D) botulism
In Philadelphia, in 1970, 75% of the population is White. What percentage of the complaints against police were from African-Americans?
A. 30% B. 50% C. 70% D. 90%
Chemical messengers that travel through the bloodstream and affect other cells are called:
A) endocrine glands. B) hormones. C) gonads. D) Sertoli cells.