Brightness constancy results in the tendency to perceive:
A. all stimuli as brighter than they really are
B. brightness as remaining the same in changing illumination
C. colors as grayish in dim light
D. that the sun produces white light
Answer: B
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Lynda has just had her first menstrual period. The technical term for this beginning of menstruation is
a. menarche. b. menopause. c. dysmenorrhea. d. premenstrual syndrome.
Most conference presentations are ____ minutes in length
a. 5 to 10 b. 10 to 15 c. 15 to 20 d. 20 to 25
Active euthanasia involves ceasing medical interventions that would prolong a person's life.
a. true b. false
When groups of subjects are equal to begin with, but are then treated
differently by the experimenter, the research technique is post-facto. Indicate whether the statement is true or false