A researcher wants to see whether she can make the typical administrative assistant job more motivating at Acme, Inc. To experimentally investigate this possibility, she randomly assigns administrative assistants to one of the following conditions:
doing the job as it has always been done, having a computer performance monitoring device installed, receiving feedback about their performance on a weekly basis, or being given a say in how one's workload is structured and done. Which of the preceding conditions is an example of a control group?
A) being given a say in how one's workload is structured and done
B) doing the job as it has always been done
C) having a computer performance monitoring device installed
D) receiving feedback on a weekly basis
Answer: B
Rationale: A control group is the group that does not receive the treatment and therefore serves as a comparison for the experimental group(s).
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Tera has a disorder that is untreatable and produces blindness and muscle degeneration prior to death. What disorder does Tera have?
A. fragile X syndrome B. Tay-Sachs disease C. Klinefelter's syndrome D. hemophilia
One reason for increased coordination and agility during the middle childhood years is
a. practice using physical skills. b. decreased myelination of motor pathways. c. decreased muscle strength. d. reduced size and activity in the cerebellum.
The most common cause of death among teenagers is car crashes.
Answer the following statement true (T) or false (F)
If the points on a scatterplot are spread all over the graph, this would suggest that the two variables depicted are a. normally distributed. b. positively correlated. c. strongly related
d. not correlated.