Which one of the following is used for calculating internal consistency for tests whose questions can be scored as either right or wrong?
A. split halves method
B. test–retest method
C. coefficient alpha
D. KR-20 formula
Ans: D
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Sonya is being administered the WAIS-IV, and is being assessed on her ability to perceive and analyze patterns in designs presented to her. She is most likely being tested on which of the following subtests?
a. Picture arrangement b. Similarities c. Block design d. Picture completion
Fraud in science
a) Undermines public trust in research b) Is rarely discovered by outsiders c) Is common due to the pressure to publish d) Involves self-plagiarism
A critical intracellular trigger for the development of Alzheimer's disease is
A) overproduction of the short form of the ?-amyloid protein. B) reduced amounts of the tau protein in brain cells. C) overproduction of the long form of the ?-amyloid protein. D) an unfolding of the long form of the ?-amyloid protein. E) induction of apoptosis within hippocampal neurons.
Which of the following is true about acupuncture?
a) It is a traditional Japanese healing art. b) It has been shown by research to be an effective way to relieve migraine headaches. c) It appears to be no more effective than fake acupuncture, in which needles are inserted superficially in random places in the body. d) Researchers theorize that acupuncture works through the release of dopamine, caused by the stimulation of acupuncture points. e) The practice of acupuncture began approximately 80 years ago.