According to positron emission tomography (PET) scans, which of the following areas are the first to show activity when a voluntary movement is initiated?
A. the occipital and temporal lobes
B. the parietal and frontal lobes
C. the SMA and the premotor area
D. the premotor area and the parietal lobes
Answer: B
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The first Supreme Court case on passive euthanasia involved a case in which a family wanted to allow Nancy Cruzan to die by a. taking her off a respirator
b. giving her a lethal injection. c. letting her take a lethal dose of medication. d. ending force feedings.
Which best describes the current understanding of gender differences in cognitive abilities?
A) There are no gender differences in cognitive abilities. B) There is currently a debate about whether these differences are genetic or the result of cultural and environmental factors. C) There is no evidence that these differences are biological. D) There is no evidence that cultural and environmental factors can affect these differences.
Which of the following statements is true of the activity of neurons?
a. The nerve impulse fades in strength as it travels through the neuron. b. Transmission of information at synapses occurs by means of direct physical contact between the nerve cells. c. The size and speed of the neural impulse is the same for a particular axon regardless of the strength of the stimulus that sets it off. d. None of the above are true.
Which of the following is the best example of covert behavior?
a. blinking in response to a light b. imitating a friend's gesture c. remembering a pleasant experience d. rapid eye movements while sleeping