Question

QUESTION 1

1. Which of the following procedures is intended to ensure or enhance a study’s internal validity?

   	a.	replication
   	b.	random assignment
   	c.	random sampling

10 points   

QUESTION 2

1. Which causal criterion is established in an experiment by tests of statistical significance?

   	a.	association
   	b.	direction of influence
   	c.	nonspuriousness (elimination of rival explanations)

10 points   

QUESTION 3

1. Experiments afford less control over extraneous variables than other approaches to social research.

   	a.	True
   	b.	False

10 points   

QUESTION 4

1. In a “perfect” experiment, the only rival explanation for the study hypothesis is that the results are due to chance factors.

   	a.	True
   	b.	False

10 points   

QUESTION 5

1. Tests of statistical significance indicate whether differences among experimental conditions are likely to have occurred by chance.

   	a.	True
   	b.	False

10 points   

QUESTION 6

1. A weakness of the pretest-posttest control group design is that it lacks random assignment.

   	a.	True
   	b.	False

10 points   

QUESTION 7

1. A 2 × 3 factorial design has five experimental conditions.

   	a.	True
   	b.	False

10 points   

QUESTION 8

1. Compared with laboratory experiments, field experiments are less likely to raise ethical problems because participants rarely know they are in an experiment.

   	a.	True
   	b.	False

10 points   

QUESTION 9

1. Experimental designs may be incorporated into questionnaire surveys.

   	a.	True
   	b.	False

10 points   

QUESTION 10

1. The method most often used to increase the generalizability of experimental results is replication.

   	a.	True
   	b.	False

Answer 1