Question 3

Suppose that a sufficiently large set of students takes a new IQ test twice and that the correlation between the students' first score and the students' second score is 0.97 p<0.05. Should that correlation be interpreted to be good evidence that this new IQ test has high reliability?

• A.Yes
• B.No

Question 4

Suppose that a sufficiently large set of students takes a new IQ test twice and that the correlation between the students' first score and the students' second score is 0.97 p<0.05. Should that correlation be interpreted to be good evidence that this new IQ test has high validity?

• A.Yes
• B.No

Question 5

Suppose that a sufficiently large set of students takes a new Iq test twice and that the correlation between the students' first score and the students' second score is 0.07 p>0.90. Should that correlation be interpreted to be good evidence that this new IQ test has low reliability?

• A.Yes
• B.No

Question 6

Suppose that a sufficiently large set of students takes a new iQ test twice and that the correlation between the students' first score and the students' second score is 0.07 p>0.90. Should that correlation be interpreted to be good evidence that this new IQ test has low validity?

• A.Yes
• B.No

Question 7

Suppose that a researcher tests for racial bias in criminal sentencing. The researcher analyzes data on sentence lengths from a randomly-selected 4,000 convictions in the United States. The researcher predicts sentence lengths using predictors only for the race of the convicted person and the state in which the criminal was convicted. Does this study have a high amount of internal validity?

• A.Yes
• B.No

Question 8

Suppose that a researcher tests for racial bias in criminal sentencing. The researcher conducts an experiment in which students from the local college are randomly given a story about a Black man convicted of a DUI or a White man convicted of a DUI. The researcher analyzes data on sentence lengths these students to see whether there is a difference in the mean sentence lengths for the Black man and for the White man. Does this study have a high amount of internal validity?

• A.Yes
• B.No

Question 9

Suppose that a researcher tests for racial bias in criminal sentencing. The researcher conducts an experiment in which students from the local college are randomly given a story about a Black man convicted of a DUI or a White man convicted of a DUI. The researcher analyzes data on sentence lengths these students to see whether there is a difference in the mean sentence lengths for the Black man and for the White man. Does this study have a high amount of external validity?

• A.Yes
• B.No

Question 10

Suppose that researchers measure participant support for Candidate X, then show participants a campaign ad for Candidate X, then re-measure support for Candidate X, and then assess whether mean support for Candidate X changed from the first measurement to the second measurement. That would be a ___.

• A.between-subjects design
• B.within-subjects design

Question 11

Suppose that researchers conduct an experiment in which participants are randomly placed into either a control group or a treatment group. For participants in the control group, the researcher measures only participant support for Candidate X. For participants in the treatment group, the researcher shows these participants a campaign ad for Candidate X and then the researcher measures participant support for Candidate X. That would be a ___.

• A.between-subjects design
• B.within-subjects design

Question 12

Suppose that a researcher conducts an experiment testing for racial bias. Participants are randomly assigned to receive a story about a Black man convicted of a DUI or to receive a story about a White man convicted of a DUI. If the researcher asks participants whether the color of a banana is blue or yellow, would that "banana" question be an attention check item?

• A.Yes
• B.No

Question 13

Suppose that a researcher conducts an experiment testing for racial bias. Participants are randomly assigned to receive a story about a Black man convicted of a DUI or to receive a story about a White man convicted of a DUI. If the researcher asks participants whether the color of a banana is blue or yellow, would that "banana" question be a manipulation check item?

• A.Yes
• B.No

Question 14

Which ONE of the following is more likely to create demand effect among participants?

• A.between-subjects design
• B.within-subjects design

Question 15

Suppose that we wanted to assign each of 100 participants a score that rated their political knowledge. Select the option below that would provide the best measurement to differentiate persons with low political knowledge from persons with moderate political knowledge from persons with high political knowledge.

• A.a 20-item test of only difficult items
• B.a 20-item test of only easy items
• C.a 20-item test of only moderately difficult items
• D.a 20-item test that includes easy items, moderately difficult items, and difficult items