Dr Delmonte Develops a Questionnaire to Assess the Personality Trait

question 93

Multiple Choice

Dr. Delmonte develops a questionnaire to assess the personality trait of impulsivity among adults. In a journal article, she presents evidence that college students tend to get essentially the same score if they take the test twice, 2 months apart. However, when a reviewer examines the sample questionnaire items included in the article, it seems that they relate more to whether a person is sociable, outgoing, and fun-loving than to whether an individual is impulsive. Dr. Delmonte's questionnaire may lack:

• A)test-retest reliability.
• B)objectivity.
• C)validity.
• D)interrater reliability.

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Definitions:

Total Revenue

The total amount of money generated by a business from the sale of goods or services before any expenses are subtracted.

Marginal Cost

The change in total cost that arises when the quantity produced is incremented by one unit; essentially, it is the cost of producing one more unit of a good.

Output

The quantity of goods or services produced by a firm or economy.

Total Revenue Curve

A graphical representation that shows how total revenue changes as the quantity sold of a good or service changes, holding all other factors constant.