If Subjects Participating in a Two-Group Pretest-Posttest Design Research Study

question 42

Multiple Choice

If subjects participating in a two-group pretest-posttest design research study about bipolar disorder are given a knowledge test about the disorder being studied multiple times, what is the potential disadvantage?

• A) The selection bias of only choosing subjects that take the test.
• B) There will be an apparent lack of differences between the results
• C) A threat to validity and mortality from repeated subject testing.
• D) The longer time needed for testing requires a larger sample size.

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Definitions:

Visual Literacy

The skill to understand, discuss, and derive significance from data displayed as a picture.

Wikis

Collaborative websites that allow users to add, modify, or delete content via a web browser usually with no programming skills required.

Technical Expertise

Refers to the specialized knowledge or skills in a particular field or industry.

Chartjunk

Refers to all the unnecessary or distracting decorations in charts that do not enhance understanding of the data.