Quiz Question Babbie Ch. 8 Experiments-Subject Selection

Which of the following methods would NOT be chosen by a researcher to select subjects for an experiment if he or she wanted to acheive comparibility in the experiment and control groups?

A. Probability Sampling
B. Double-Blind Selection
C. Matching
D. Randomization
e. All of the above are methods that might be chosen













A. is not correct, because probability sampling is a method of subject selection. it is a general term for samples selected in accord with the probability theory, such as systematic sampling, that typically involves some sort of random selection mechanism.
B. is the CORRECT answer. double-blind selection is not a term used in regards to subject selection. a double-blind experiment, however, is a design implemented once subjects are already chosen to help guard against experimenter bias, where neither the experimenter or the subject knows which subjecs are in the control and experimental groups.
C. is not correct, because matching is a method of subject selection whereby pairs of subjects are matched on the basis of their similarities on one or more variables; one member of the pair is assigned to the control group and the other is assigned to the experimental group.
D. is not correct, because randomization is a method of subject selection. it is the technique of assigning experimental subjects to experimental and control groups randomly.
E. is not correct because double-blind selection is not a method of subject selection.