A Study Is Designed to Test the Effectiveness of a Program

question 4

Multiple Choice

A study is designed to test the effectiveness of a program to teach adolescents about nutrition. All research participants are randomly assigned to two groups, one which goes through the program and the other which does not. Both before and after the program, all participants take a test measuring knowledge of nutrition. What type of experimental design is this?

• A) posttest-only control group design
• B) pretest-posttest control group design
• C) 2 × 2 factorial design
• D) 2 × 4 factorial design

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Definitions:

Nurture

The process of caring for and encouraging the growth or development of someone or something.

Scientific Research

The systematic investigation of scientific theories and hypotheses through controlled experiments and observational studies to acquire new knowledge.

Objective

Something that is not influenced by personal feelings or opinions in considering and representing facts.

Testable

The quality of being able to be examined, experimented on, or evaluated through a careful and structured process.