Which choice best describes the principle of natural selection?
Answer: Individuals with genetically influenced traits that are adaptive in a particular environment tend to survive and reproduce.
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Postmortem studies on individual who committed suicide have revealed alterations in an area of the brain. Which area of the brain is showing unique DNA alterations?
a. amygdala b. prefrontal cortex c. thalamus d. thalamus
The performance of women on spatial tasks is
A. constant across the menstrual cycle. B. best when estrogen levels are high. C. best when progesterone levels are high. D. best when testosterone levels are high.
Research on brain plasticity shows that when healthy brain regions take over the functions of damaged areas,
A) children's IQ scores increase by 10 to 15 points, on average. B) the brain processes information more quickly and accurately than it would if it were intact. C) a "crowding effect" occurs in which multiple tasks must be done by a smaller than usual volume of brain tissue. D) neurons in the healthy regions tend to die, leaving those areas vulnerable to future damage.
Endorphins have effects most similar to:
a. heroin. b. aspirin. c. amphetamines. d. marijuana.