A researcher hypothesized that the drug amphetamine (a stimulant) improves learning
She explains her hypothesis to her participants and gives experimental group participants an amphetamine pill before they begin studying. Control group members get nothing. Later, she assesses how much each participant learned. Because of the hypothesis explanation and because the experimental group was given a pill that the other group did not receive, the experimental group will most likely expect to learn more. Thus, any observed differences between groups may reflect differences in expectation, not the actual effect of the drug, a problem known as the
a. anthropomorphic error.
b. research participant bias.
c. courtesy bias.
d. double-blind experimental effect.
ANSWER: b
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The bulb-shaped structures found at the end of neurons form
connections with the dendrites and somas of other neurons and allow information to pass from neuron to neuron. These bulb-shaped structures are called the a. myelin sheaths. b. ion channels. c. dendrite arcs. d. axon terminals.
The fair use of test results is the concern of stakeholders including the
a) test taker, test developer, test user b) test developer, test user, test population c) test taker, test user, test population d) test population, test developer, test taker