The Young-Helmholtz theory of color vision assumes that
a. color receptors exist in opposing pairs.
b. color perception is determined by differences in the firing rates of three types of retinal cells.
c. there are three different types of cones.
d. all of the above
c
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The average age at which adolescents have sexual intercourse for the first time is __________; overall the average age of first sexual intercourse is __________.
A. increasing; 15 B. declining; 13 C. declining; 17 D. increasing; 19
The concept of childhood sexuality can be traced to ____.?
a. ?Aristotle b. ?Romanes c. ?Darwin d. ?Patze e. ?All except Aristotle
Infants beginning around 12 months of age
a. display a negative bias. b. display a positive bias. c. take the positive cues adults give them more seriously than the negative cues. d. are self-absorbed and no affected by positive or negative cues.
Joan, who does not like being scared, decides not to see a horror film with her friends. Joan is using __________
A) emotional contagion B) self-conscious emotions C) basic emotions D) emotional self-regulation