________ can be defined as those studies in which participants do not know the experimental condition (group) to which they have been assigned.
A. Single-blind studies
B. Interviews
C. Case studies
D. Descriptive studies
Answer: A
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Which organ is LEAST involved in the biology of the adolescent growth spurt?
a. Uterus b. Testes or ovaries c. Pituitary gland d. Hypothalamus
Stan, an aging Hollywood actor, uses Botox treatments to reduce wrinkling. These treatments work, because Botox a. blocks nicotinic receptors on muscle fibers, reducing their rate of contraction
b. breaks down acetylcholinesterase (AChE) in the synaptic gap, leading to stronger contraction of facial muscles. c. reduces the release of acetylcholine (ACh) and which paralyzes facial muscles. d. increases the release of acetylcholine (ACh) and the subsequent contraction of facial muscles.
Dissection revealed that the brain was made up of many anatomically distinct areas or "parts." This technique involves
a. linking specific structures in the brain with specific psychological or behavioral functions. b. direct electrical stimulation and activation of brain tissue. c. cutting apart autopsied human and animal brains and examining them under a microscope. d. studying subtle behavioral signs of nervous system dysfunction, including clumsiness, an awkward gait, poor hand-eye coordination, and other perceptual and motor problems.
The accurate recall by high-school graduates, of the names and faces of classmates over long periods may be explained by:
A) a lack of physical trauma in most research participants B) the permanence of memory traces reaching LTM C) the pinpoint accuracy of visual codes D) occasional rehearsal through reminiscing E) all of the above