Professor Keystone proposes that the heritability of temperament is .80. Which is a statement of Professor Keystone's proposal?
A. A large portion of temperament is determined by environment.
B. 20% of temperament is determined by the X chromosome.
C. A large portion of temperament is determined by genetics.
D. 80% of temperament is determined by the X chromosome.
Answer: C
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An LSD "trip" may last as long as
a. 30 minutes. b. 60 minutes. c. 2 hours. d. 6 hours. e. 12 hours.
Erection is best described as a: a. Spinal reflex
b. Muscular contraction. c. Cognitive process. d. Tactile response.
As an infant tackles a task, a parent realizes the infant is doing a good job and stops making
suggestions. This behavior is known as: A) proximal development. B) executive competence. C) scaffolding. D) directive speech.