About This Chapter
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.
|Descriptive Research Design: Definition, Examples & Types||Define and discuss descriptive research.|
|What is Survey Research? Definition, Methods & Types||Define survey research and discuss some of its advantages and disadvantages.|
|Response Styles of Surveys: Types, Advantages & Disadvantages||Discuss the various response styles of surveys, including advantages and disadvantages of each.|
|Correlational Research: Definition, Purpose & Examples||Define and discuss correlational research.|
|The Relationship Between Variables: Correlation Coefficient & Scatterplots||Define 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 Coefficient||Explain how to compute the correlation between two variables using the raw score method.|
|Interpreting the Correlation Coefficient||Explain how to interpret the general indicators of relationships using the correlation coefficient index.|
|Limitations of Correlational Research||Discuss the limitations of correlational research, including the fact that correlation does not prove causation.|
1. Descriptive Research Design: Definition, Examples & Types
This lesson explores the different ways that a researcher can understand individuals or groups of people, both in terms of psychological research as well as general research in other fields.
2. What Is Survey Research? - Definition, Methods & Types
This lesson explores the ways a researcher may employ the types of surveys used in research. We will also go over the strengths and weaknesses of each type of survey.
3. Response Styles of Surveys: Types, Advantages & Disadvantages
This lesson explores the different ways a researcher can write questions to use in a survey. Each survey type will have strengths and weaknesses to help researchers understand why they should or shouldn't pick that type.
4. Correlational Research: Definition, Purpose & Examples
This lesson explores, with the help of two examples, the basic idea of what a correlation is, the general purpose of using correlational research, and how a researcher might use it in a study.
5. The Relationship Between Variables: Correlation Coefficient & Scatterplots
The focus of this lesson is on how both correlation coefficients and scatterplots convey the same message. Specifically, this lesson will explore how these two can reveal the same information but in different ways.
6. Using the Raw Score Method to Compute the Correlation Coefficient
This lesson looks at the mathematical steps involved in computing a correlation coefficient by using raw scores. We will walk through the process with easy to follow numbers.
7. Interpreting the Correlation Coefficient
This lesson explains the process of interpreting and analyzing a correlation coefficient both as a figure and as a context by discussing common and easy to understand examples.
8. Limitations of Correlational Research
Many researchers use correlations in their studies, but it is not without risk. This lesson explores some of the issues that researchers may experience if they use correlations.
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Other chapters within the Psychology 105: Research Methods in Psychology course
- Introduction to Research Methods
- Principles of Ethical Research
- Setting Up the Research Study
- Data Collection Techniques in Psychology
- Qualitative Research Methods and Design
- Quasi-Experimental Research
- Sampling and Generalization
- Measurement in Research
- Internal Validity in Research
- External Validity
- Experimental Design
- Descriptive Statistics in Psychology
- Inferential Statistics in Psychology
- Evaluating Research Findings
- Studying for Psychology 105