The major means of control in single-subject experimental designs is
a. randomization. c. statistical control.
b. replication. d. None of these are true.
Ques. 2The set of varied conditions that the experimenter imposes on the subjects is referred to as the
a. independent variable.
b. treatment variable.
c. experimental variable.
d. extraneous variable.
e. a, b, and c
Ques. 3Experimental designs differ mainly in
a. number of independent variables.
b. method of assigning subjects to treatments.
c. number of pre-measurements of the dependent variable.
d. a and b
e. a, b, and c
Ques. 4In order to apply the law of the single significant independent variable to a study, a researcher should
a. choose a single test for the dependent variable.
b. determine which single test is most related to the independent variable by using several tests as possible dependent variable.
c. determine which single variable makes the most difference by varying the independent variable in many different ways.
d. establish two groups that are as alike as possible, except one is exposed to the independent variable while the other is not.
Ques. 5Indicate whether the following statements refer to internal validity or external validity. Does this experiment represent reality?
a. internal validity b. external validity.
Ques. 6The fact that people may learn from test taking is an experimental validity threat known as ____; the fact that the measurement scale may change over the course of the experiment is called ____.
a. instrumentation; testing effect c. testing effect; instrumentation
b. maturation; testing effect d. instrumentation; selection
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