A clinical psychologist proposes to test the effectiveness of a treatment on reducing depressive symptoms. She proposes to administer the treatment to one group and assign the other group of participants to a wait list
This experimental design has _________ levels.
a) two: treatment vs no treatmen
b) one: treatment
c) three: treatment vs no treatment vs dependent variable
d) four: treatment vs no treatment vs dependent variable vs extraneous variable
A
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Stress may impair our production of disease-fighting white blood cells called __________.
A. leukocytes B. amoeboids C. blastocysts D. hemocytes
Which of the following are symptoms of opioid withdrawal?
a. sneezing b. runny nose c. diarrhea d. all of these
Values such as Cohen's d or r2 (the percentage of variance accounted for) are used to measure ____
a. the validity of a hypothesis test b. the risk of committing a type I error c. the size of a treatment effect or the strength of a correlation d. the level of significance
According to Erik Erikson's theory, in late adulthood we need:
a. recognition, respect, and honor from our family and colleagues b. a sense of pride in our acquisitions and our standing in the community c. a sense of contentment about how we lived and what we accomplished d. mainly good health—without it there is despair