Apolipoprotein (apoE) is associated with the development of dementia because apoE:
A. helps insulate neurons from various toxins
B. results in neurofibrillary tangles
C. causes aluminum to concentrate in the brain
D. helps transport amyloid protein through the bloodstream
D. helps transport amyloid protein through the bloodstream
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The first step in a research study is the formulation of a(n) ____________________
Fill in the blank(s) with correct word
What is the primary difference between somatic symptom disorder and illness anxiety disorder?
a. There are no differences; these are both names for the same disorder. b. Individuals with somatic symptom disorder actually experience physical symptoms, whereas individuals with illness anxiety disorder experience few, if any, symptoms. c. Individuals with illness anxiety disorder actually experience physical symptoms, whereas individuals with somatic symptom disorder experience few, if any, symptoms. d. Individuals with somatic symptom disorder are primarily male, whereas illness anxiety disorder affects mainly females.
From an ethical viewpoint, the ABAB design is preferred over the ABA design because
A. the ABAB design more powerfully rules out chance fluctuations and coincidental events. B. it does not seem right to end the design with the withdrawal of a treatment that may be beneficial to the participant. C. a single reversal, in most cases, tends to be an extremely powerful evidence for the effectiveness of the treatment. D. the ABAB design is less expensive and less time-consuming.
Which of the following describes a sequential design?
A. studying a group of five-year-olds over a 10-year period B. measuring motor abilities of a child when she is two years old and then measuring her abilities again when she is five years old C. comparing reasoning abilities of five-, eight-, and 10-year-olds D. studying groups of 10- and 15-year-olds and then studying these individuals two, four, and six years later