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- Understand the significance of measurement in the research process.
- Learn the difference between qualitative and quantitative measurement.
- Explain operationalization and conceptualization in measurement.
- Provide examples of discrete, continuous and categorical variables.
- Take a look at various scales of measurement.
- Differentiate between criterion-referenced and norm-referenced tests.
- Understand when to use different types of measurement.
- Explore common research measurement scales.
- Become familiar with different types of reliability.
- Discuss way to improve measurement reliability.
- Examine different types of validity.
- Understand how validity and reliability are related.
1. The Importance of Measurement in the Research Process
Why is it important to measure variables in a study? And, how do you go about doing it? In this lesson, we'll examine the importance of measurement, along with some common types of psychological measurement.
2. The Difference Between Qualitative & Quantitative Measurement
In research, there are generally two types of data. In this lesson, we'll look at quantitative and qualitative measurement, when each are used, and how researchers can sometimes use both.
3. Conceptualization & Operationalization in Measurement
When designing a study, how do you make sure that everyone knows what you're talking about? How do you measure things that seem difficult to measure? In this lesson, we'll look at two key steps in research: conceptualization and operationalization.
4. Continuous, Discrete & Categorical Variables: Definition and Examples
When doing research, variables come in many types. In this lesson, we'll explore the three most common types of variables: continuous, discrete, and categorical.
5. Scales of Measurement: Nominal, Ordinal, Interval & Ratio
When doing research, variables are described on four major scales. In this lesson, we'll look at the major scales of measurement, including nominal, ordinal, interval, and ratio scales.
6. Types of Tests: Norm-Referenced vs. Criterion-Referenced
What's the best way to score tests? In this lesson, we'll look at two major types of tests that are scored differently from each other: norm-referenced and criterion-referenced tests.
7. Types of Measurement: Direct, Indirect & Constructs
How do you measure psychological traits? In this lesson, we'll look at how psychologists measure traits, including direct and indirect observation. We will also explore why psychological traits are so difficult to measure.
8. Commonly Used Research Measurement Scales
How do you measure a person's thoughts or feelings when you can't see them? In this lesson, we'll look at common measurement scales that psychologists use when examining thoughts and feelings.
9. The Reliability of Measurement: Definition, Importance & Types
Psychologists use tools like surveys and tests to measure psychological traits. But, what happens when a measurement tool is not consistent? In this lesson, we'll examine what reliability is, why it is important, and some major types.
10. Methods for Improving Measurement Reliability
Reliability is the consistency of the results of a measurement tool. But, what causes a tool to have low reliability? And, what can be done to improve reliability? In this lesson, we'll answer both of those questions.
11. The Validity of Measurement: Definition, Importance & Types
How do you know if you are measuring what you actually want to measure? In this lesson, we'll look at what validity is, why it is important, and four major types of validity: face, construct, content, and predictive validity.
12. The Relationship Between Reliability & Validity
Though reliability and validity are different from each other, they are still related. In this lesson, we'll look at the differences of and relationship between reliability and validity.
13. Causation in Psychology Research: Examples & Definition
Many people get causation and correlation confused, although both terms are used frequently. In this lesson, you will learn the difference between the two and how psychologists go about determining causation.
14. Convenience Sample: Example & Definition
Conducting true experiments is expensive and time-consuming. However, by using a sample of a population that is convenient, the cost and time required to conduct it are greatly reduced. So, why not do that for every experiment?
15. Predictor Variable: Definition & Example
Did you know predictor variables are commonly used in nonexperimental research designs? Learn more about predictor variables from examples, and then test your knowledge with a quiz.
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Other chapters within the Research Methods in Psychology: Tutoring Solution course
- Introduction to Research Methods: Tutoring Solution
- Principles of Ethical Research: Tutoring Solution
- Setting Up the Research Study: Tutoring Solution
- Data Collection Techniques in Psychology: Tutoring Solution
- Nonexperimental Research: Tutoring Solution
- Qualitative Research Methods and Design: Tutoring Solution
- Quasi-Experimental Research: Tutoring Solution
- Sampling and Generalization: Tutoring Solution
- Internal Validity in Research: Tutoring Solution
- External Validity: Tutoring Solution
- Experimental Design: Tutoring Solution
- Descriptive Statistics in Psychology: Tutoring Solution
- Inferential Statistics in Psychology: Tutoring Solution
- Evaluating Research Findings: Tutoring Solution