Chapter 9: Research Design Explained

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Review and improve your understanding of the material	Quiz yourself	Apply this information	Get help
See how the key terms are connected by looking at this concept map.	Test yourself on the key terms with this matching test Play this drag and drop matching game to see if you know your threats to internal validity.	If you have a fantasy baseball or football team, see how knowing about regression toward the mean can help you win. Before investing, you should consider regression toward the mean.	Help with answering the end-of-chapter exercises.
Go through an online tutorial on internal validity Go through our tutorial looking at the weaknesses of four designs. Go through our murder mystery tutorial on internal validity	Take some practice quizzes Short, general quiz More specific quizzes Take 12-item quizzes over the first part of the chapter. Quiz A Quiz B Take 8-item quizzes over the second part of the chapter. Quiz A Quiz B Take 7-item quizzes over the third part of the chapter. Quiz A Quiz B	Humorous example of making a wrong cause-effect conclusion ("The Onion" presents "proof" that Tommy is responsible for millions of divorces). A researcher seems to have it backwards when concluding that vaping causes heart attacks.
Review by studying the chapter summary testing yourself on the key issues testing yourself on the chapter objectives Review the chapter glossary

Review and improve your understanding of the material

Quiz yourself

Apply this information

Get help

See how the key terms are connected by looking at this concept map.

Test yourself on the key terms with this matching test

Play this drag and drop matching game to see if you know your threats to internal validity.

Go through our tutorial looking at the weaknesses of four designs.