____ increases the chance that characteristics other than the independent variable will be equally distributed across treatment groups
a. Manual distribution
b. Predetermined distribution
c. Natural assignment
d. Random assignment
d
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Lisa is having a very stressful term in college. She has noticed changes in her sleeping habits, appetite, interest in her hobbies, and ability to concentrate. What should Lisa do?
A. Nothing, as there is nothing wrong with her. All students experience these symptoms. B. She should contact her student health center and be evaluated for major depressive disorder. C. She should contact her student health center and be evaluated for bipolar disorder. D. She may have major depressive disorder, but she should wait for the term to be over and see if the symptoms go away on their own.
Caffeine can have an effect on the drinker of up to
A) 1 hour. B) 2 hours. C) 4 hours. D) 6 hours.
Which of the following is a mnemonic technique?
a. Making a rhyme out of the last letter of all items in a list to be recalled. b. Using maintenance rehearsal to keep information in long-term memory. c. Making bizarre and unusual associations. d. Using the tip-of-the-tongue effect.
In the context of birth defects, which of the following is true of sickle-cell anemia?
A. It is a metabolic disorder resulting in mental retardation. B. Families of Mediterranean descent are primarily at risk for sickle-cell anemia. C. It increases susceptibility of at-risk individuals to pneumonia and stroke. D. Treatment for sickle-cell anemia involves regular blood transfusions with clotting factors.