# Ch 5: Nonexperimental Research

Watch online video lessons on nonexperimental research to learn about surveys and other types of descriptive research. Each lesson is accompanied by a short multiple-choice quiz you can use to check your understanding of these research topics.

## Nonexperimental Research - Chapter Summary and Learning Objectives

Psychologists conduct nonexperimental research when they want to observe and measure a subject or variable in its natural state. Through this chapter on nonexperimental research, you'll explore pros and cons of survey research and learn to use the raw score method to determine the correlation between two variables. After watching our series of brief but engaging video lessons, you should be able to do the following:

• Identify the three types of descriptive research: observational research, case studies and surveys.
• Differentiate between positive and negative correlation.
• Explain the relationship between correlations and scatterplots.
• Recognize limitations of correlational research, including direction of causality and third-variable problems.

VideoObjective
Descriptive Research Design: Definition, Examples & TypesDefine and discuss descriptive research.
What is Survey Research? Definition, Methods & TypesDefine survey research and discuss some of its advantages and disadvantages.
Correlational Research: Definition, Purpose & ExamplesDefine and discuss correlational research.
The Relationship Between Variables: Correlation Coefficient & ScatterplotsDefine and discuss how the correlation coefficient is a frequent measure to assess the degree of relatedness. Explain how scatterplots are used to illustrate this information.
Using the Raw Score Method to Compute the Correlation CoefficientExplain how to compute the correlation between two variables using the raw score method.
Interpreting the Correlation CoefficientExplain how to interpret the general indicators of relationships using the correlation coefficient index.
Limitations of Correlational ResearchDiscuss the limitations of correlational research, including the fact that correlation does not prove causation.

Final Exam
Chapter Exam

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