Question 1

An educational psychologist is testing the discriminant validity of a new measure of numerical learning difficulties. He gives his measure to a group of students along with another measure of verbal learning difficulties, which he predicts should not be strongly related to numerical learning difficulties. Which of the following correlations would the psychologist hope to find in order to establish discriminant validity?

Accepted Answer

A)  r = 1.0
B)  r = −1.0
C)  r = 0.83
D)  r = −0.18E) A) and B)
F) C) and D)

Question 2

Dr. Rodriquez is considering conducting a study examining whether narcissistic people have poorer romantic relationships than those who are not narcissistic. One of her first tasks is to determine which of her participants are narcissistic and which are not. She decides to use the scale created by a colleague, the Donal scale. Question 1 reads, "I tend not to think about other people as much as I think about myself." Question 2 reads, "I do not have a high opinion of myself." Question 3 reads, "I think other people think I am really special."
Dr)  Rodriquez calculates a correlation coefficient (r)  to examine the relationship between Question 1 and Question 2 and between Question 1 and Question 3. She finds a correlation coefficient of r = −0.73 between Questions 1 and 2 and a correlation coefficient of r = 0.74 between Questions 1 and 3. Which of the following is true of her findings?

Accepted Answer

A)  There appears to be good internal reliability in the scale.
B)  The correlation between Questions 1 and 2 and Questions 1 and 3 are in the same direction.
C)  The correlation between Questions 1 and 2 is much weaker than between Questions 1 and 3.
D)  The negative correlation between Questions 1 and 2 is bad for Dr. Rodriquez.E) A) and B)
F) All of the above

Question 3

In interrogating the construct validity of a measure, which question should a researcher ask?

Accepted Answer

A)  Is there enough evidence that this measure is valid?
B)  Do I know that this measure is valid?
C)  Does this measure have the right kind of validity?
D)  Has an expert said that this measure is valid?E) B) and C)
F) None of the above

Question 4

Which of the following is NOT an example of physiological measurement?

Accepted Answer

A)  Measurements of hormones in the bloodstream
B)  Blood pressure measurements
C)  Number of panic attacks a patient reports
D)  A brain scan made using an fMRIE) A) and B)
F) All of the above

Question 5

Your friend Alanna says that when examining validity, you always want to see positive correlations. Why is she wrong?

Accepted Answer

A)  Both the strength and the direction of a correlation matter when examining validity.
B)  The strength of a correlation matters, but the direction of a correlation does not matter.
C)  Negative correlations are desirable when examining validity.
D)  Correlations are not used to examine validity.E) All of the above
F) A) and C)

Exam 5: Identifying Good Measurement

Correct Answer
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Your friend Alanna says that when examining validity, you always want to see positive correlations. Why is she wrong?

Correct Answer
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Which of the following is NOT an example of physiological measurement?

Correct Answer
verified

Correct Answer
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In interrogating the construct validity of a measure, which question should a researcher ask?

Correct Answer
verified

Exam 5: Identifying Good Measurement

Correct AnswerverifiedShow Answer

Your friend Alanna says that when examining validity, you always want to see positive correlations. Why is she wrong?

Correct AnswerverifiedShow Answer

Which of the following is NOT an example of physiological measurement?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In interrogating the construct validity of a measure, which question should a researcher ask?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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