Free Printable 2019 Research II

1.

Researchers find that there is a significant, positive correlation between the number of hours students sleep and their grades. The researchers would be justified in concluding that

a)

earning good grades causes people to sleep more

b)

sleeping more causes students to perform better in school

c)

students who earn good grades tend to sleep more than those who do not

d)

more sleep has a beneficial impact on students’ grades

e)

sleep deprivation has no impact on school performance

2.

A researcher surveyed social adjustment in the same group of 20 people from early childhood through adulthood. In this example, the group of 20 people surveyed was the study’s

a)

Sample

b)

Population

c)

Operational definition

d)

Control group

e)

Randomization

3.

Which of the following studies demonstrates a cross-sectional research design?

a)

Testing the first graders, and testing them again when they are in third grade

b)

Testing first graders at the end of the school year

c)

Testing first, third, and fifth graders at the beginning of the school year

d)

Observing first graders as they test in two different subject areas

e)

Observing first graders as they interact with either third graders or fifth graders

4.

A researcher randomly assigned boys and girls to each of two groups. One group watched a violent television program while the other group watched a nonviolent program. The children were then observed during a period of free play, and the incidence of aggressive behavior was recorded for each group.

What is the dependent variable in this study?

a)

Sex of the children

b)

Duration of free play

c)

Type of television program viewed

d)

Level of televised violence

e)

Incidence of aggressive behavior

5.

A researcher randomly assigned boys and girls to each of two groups. One group watched a violent television program while the other group watched a nonviolent program. The children were then observed during a period of free play, and the incidence of aggressive behavior was recorded for each group.

What is the independent variable in this study?

a)

Incidence of aggressive behavior

b)

Type of television program viewed

c)

Sex of the children

d)

Number of groups

e)

Duration of free play

6.

A researcher randomly assigned boys and girls to each of two groups. One group watched a violent television program while the other group watched a nonviolent program. The children were then observed during a period of free play, and the incidence of aggressive behavior was recorded for each group.

This research method is best characterized as

a)

experimental

b)

correlational

c)

longitudinal

d)

naturalistic observation

e)

case study

7.

Which procedure can reduce problems associated with the use of deception by a researcher?

a)

Debriefing

b)

Random sampling

c)

Random assignment

d)

Using only single-blind studies

e)

Using only double-blind studies

8.

Dr. Lewis decided to study the television viewing habits of her students and therefore demanded that they complete and return a survey regarding their viewing habits. Which of the following ethical principles was clearly violated in this study?

a)

The right to have a copy of the results

b)

The right to have a copy of the survey

c)

The right to be protected from unnecessary

d)

The right to refuse to participate in the study

e)

The right to be informed of deception

9.

Which of the following is a measure of central tendency that is most influenced by extreme scores

a)

Median

b)

Standard deviation

c)

Mean

d)

Analysis

e)

(E) Mode

10.

A researcher conducts an experiment to test the claim that new drug Y is more effective than standard drug X in inhibiting arousal. The researcher randomly assigns participants to receive drug Y or drug X and subsequently measures arousal. In this experiment, participants receiving drug Y constitute the

a)

dependent variable

b)

confounding variable

c)

experimental group

d)

control group

e)

placebo group

11.

A market researcher is interested in ascertaining which of two possible packages is more likely to entice buyers to purchase a new brand of chocolate-chip cookie. In this study, which of the following pairs represents the independent and dependent variables, respectively?

a)

Another brand of cookie; the new brand of cookie

b)

The new brand of cookie; another brand of cookie

c)

The new brand of cookie; the two types of packages

d)

Total sales for each of the packages; the different types of packages

e)

The different types of packages; total sales for each of the packages

12.

In a normal distribution, approximately what percent of the scores occur within one standard deviation above and below the mean?

a)

5%

b)

16%

c)

33%

d)

68%

e)

97%

2019 Research II

Total questions: 12

Worksheet time: 10mins

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