A researcher wanted to compare the relative effectiveness of two techniques for reducing anxiety: a drug and a relaxation exercise. The researcher gave the experimental group both the drug and the relaxation exercise. The control group was given neither the drug nor the exercise. The difference between the drug and the relaxation exercise cannot be compared in this experiment because the experiment involves a
A. redundant relationship.
B. correlation.
C. causal inference.
D. confounding
D. confounding
You might also like to view...
Beverly and Donald have been unable to conceive through sexual intercourse. They go to a clinic where Donald's sperm is mixed with Beverly's ova in a glass laboratory dish. Viable embryos are later implanted in Beverly's uterus
Which of the following procedures has been performed? in vitro fertilization ICVF artificial insemination intracytoplasmic oval injection
Imagine that you have been badly injured in an accident. Compared to the experience of a paper cut, how do your neurons fire in order to send the more intense pain message?
a) The neurons fire more strongly. b) The neurons fire at a higher rate. c) The neurons fire less strongly, but in sequence. d) The neurons fire at a lower rate, but in sequence.
The model for Freud's approach to the treatment of people with psychological
disorders is called (a) perceptual-conscious (b) superego (c) psychoanalytic theory (d) behavioral therapy theory
A "monochromat" is a person with
A) no depth perception B) vision in onlyone eye C) color blindness D) glaucoma