If both variables are measured on a nominal scale, what type of correlation coefficient is appropriate?
a. Spearman's rank-order correlation coefficient
b. phi coefficient
c. point-biserial correlation coefficient
d. none, because correlations cannot be computed on nominal data
b
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Amelia is a general physician. One of her patients claimed to be suffering from constant stomach aches. After running some tests, Amelia concludes that the patient is not suffering from any medical disorder. However, the patient insisted that she has stomach cancer. The patient was then made to participate in an experiment where she was given sugar pills and was told that it was a new medicine
for treating cancer. Some other participants in the experiment were also given sugar pills. This best exemplifies _____. A) a volunteer bias B) a placebo C) a nocebo D) debriefing
A friend meets your cousin and thinks that he is cute. Later, she asks you what he is like. You tell her that he is warm, happy, optimistic, funny, and high achieving. According to Gordon Allport's approach, you have described his ________ traits
a. primary b. central c. secondary d. cardinal
A researcher would like to determine if a new form of therapy is more effective than a placebo therapy. The researcher should compare the new therapy to
a. all of the other forms of therapy. b. only those therapies that have previously been shown to be ineffective. c. psychoanalysis. d. a neutral therapy that just creates expectations of healing.
About 10 percent of cases of cerebral palsy are the result of __________ during labor and delivery
A) an inadequate oxygen supply B) anesthetics C) epidural analgesia D) medical interventions