Research Methods Midterm Ch. 5

Question 1

SG: Limitations of test-retest reliability

Answer 1

Well for self-report tests the problem could be that they remember what they did earlier and change their answers.

Question 2

SG: Why is using multiple items in a scale believed to increase reliability?

Answer 2

Blank

Question 3

SG: Different Kinds of Validity

Answer 3

Construct Validity (Face, content, convergent, and discriminant)
Criterion Reliability (Concurrent is two related studies at once, Predictive is grades and how that will affect an sat score)

Question 4

Random Error versus Systematic Error

Answer 4

Error: The difference between a measured quantity and the true quantity
(the difference between a represented value and a true value)
Random error: Fluctuations in measurement values due to chance.
Systematic error: Fluctuations in measurement due to conceptual variables that are not the variable of interest.

Question 5

Face Validity

Answer 5

Does it seem obvious it’s measuring the right thing.

Question 6

Content Validity

Answer 6

Did it think everything through for the experiment?

Question 7

Convergent and Discriminant

Answer 7

Can the experiment be correlated with other measures for the same concepts?
Is it uncorrelated with measures for different concepts?