When Guttman scaling is being used, an individual's score is equal to the ____.
a. sum of the scale values for the items with which the individual agreed
b. weighted average of the individual item responses
c. sum of the item responses for items in the interquartile range
d. the ratio of high discrimination items to low discrimination items
Question 2
A radiologist is using an MRI to determine whether a tumor detected in a patient is malignant, but the results are ambiguous. Deciding that the danger of missing a true malignancy is greater than the upset caused by what might be a false positive diagnosis, the radiologist reports that the tumor is probably malignant and refers the patient to a specialist for further evaluation and treatment. In this example,
a. the radiologist has adopted a neutral decision criterion.
b. the radiologist has adopted a conservative decision criterion.
c. the radiologist has adopted a liberal decision criterion.
d. the radiologist's decision criterion will depend on whether the tumor is later found to be malignant.
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