When testing the effect of noise on the performance of a task, Marco tests half the participants in a cool, quiet room and the other half in a hot, noisy room. In this case, what confounding variable has Marco failed to eliminate?
A. noise level
B. task performance
C. gender of the participants
D. room temperature
Answer: D
You might also like to view...
Underextension occurs when a person uses a word too narrowly (i.e., for a specific example versus the entire category)
a. True b. False Indicate whether the statement is true or false
One of the most common anxiety disorders of childhood is ____
a. obsessive-compulsive disorder (OCD) b. panic disorder c. generalized anxiety disorder d. separation anxiety disorder (SAD)
The most common form of factor analysis involves use of the:
a. R technique b. P technique c. C technique d. D technique
The presence of inflammation in the brains of people with Alzheimer's disease suggests the disease is __________.
A. long-lasting B. prevalent C. autoimmune D. contagious