Introduction to Research in Education, 9th International Edition by Donald Ary – Test Bank

Introduction to Research in Education, 9th International Edition by Donald Ary – Test Bank

Chapter 10—Experimental Research

MULTIPLE CHOICE

1. Which variable does the experimental researcher manipulate?
a. Independent c. Extraneous
b. Attribute d. Dependent

ANS: A PTS: 1

2. Which of the following is not a characteristic of an experiment in its simplest form?
a. A dependent variable is manipulated.
b. All variables except the independent variable are held constant.
c. The effect of manipulating the independent variable is observed.
d. Extraneous variables are controlled.

ANS: A PTS: 1

3. The variable upon which the effects of the experimental treatment are observed is called the ____variable.
a. independent c. extraneous
b. dependent d. control

ANS: B PTS: 1 OBJ: WWW

4. In an experiment, a researcher believes that by manipulating Variable A he can cause changes in Variable B. However, Variable C is actually causing changes in Variable B. Variable C is a(n) ____ variable.
a. independent c. extraneous
b. dependent d. attribute

ANS: C PTS: 1

5. Which would be the least appropriate way to assign subjects to experimental groups?
a. Rolling a die c. Teacher assignment
b. Flipping a coin d. Using a table of random numbers.

ANS: C PTS: 1

6. The purpose of matching individual subjects before randomly assigning one to Group A and the other to Group B is to
a. assure that the groups are truly random.
b. assure that the groups are equivalent on the dependent variable.
c. control as many extraneous variables as possible.
d. assure that the groups are not equivalent on the dependent variable.

ANS: C PTS: 1

Exhibit 10.1: A third grade teacher feels that vocabulary instruction will help her children improve their reading scores. Half of her class receives vocabulary instruction, while the other half has a library period. She will compare reading scores after four months.

7. Refer to Exhibit 10-1. This study would be classified as
a. correlational
b. causal-comparative
c. experimental
d. survey research.
e. trend research

ANS: C PTS: 1

8. Refer to Exhibit 10-1. In order to test her hypothesis the teacher should have which group receive vocabulary instruction?
a. Those who volunteer
b. The best students
c. The poorest students
d. A randomly selected group
e. Good students who show poor concentration

ANS: D PTS: 1

9. Refer to Exhibit 10-1. The control group would be those who
a. are in the class.
b. are willing to cooperate in the research.
c. have a library period.
d. have high grade averages in reading.
e. receive vocabulary instruction.

ANS: C PTS: 1

10. Refer to Exhibit 10-1. The external validity question in this study would be:
a. is vocabulary instruction worth the time it involves?
b. was vocabulary instruction really responsible for the observed difference in reading scores?
c. would vocabulary instruction improve reading scores for all third graders?
d. should the teacher have exposed all the students to vocabulary instruction?

ANS: C PTS: 1