Campbell's "Reforms as Experiments" Article Includes a Description of an Evaluation

question 15

Multiple Choice

Campbell's "reforms as experiments" article includes a description of an evaluation of a state police crackdown on speeding in Connecticut. In conducting this study, Campbell used

• A)an interrupted time series design, with comparisons made to similar states
• B)a simple one-group interrupted time series design
• C)a nonequivalent control group design, with comparisons made to similar states
• D)a pretest posttest design (no control group)

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Definitions:

Average Fixed Cost

Production's fixed expenses (unchanged by the amount of production) split by the quantity of product made.

Average Variable Cost

The cost that varies with the level of output, computed by dividing total variable costs by the quantity of output produced.

Total Cost

A comprehensive total of expenses involved in the creation of goods or services, covering both fixed and variable costs.

Diminishing Marginal Product

The principle that as additional units of a variable input are added to fixed inputs, the increase in output will eventually decrease.