About This Chapter
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Why it works:
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Students will review:
In this chapter, you'll learn the answers to questions including:
- What are the different types of research designs?
- How do psychologists ensure that their tests are reliable and valid?
- What is the role of statistical analysis in psychology?
1. Intro to Statistics, Tests and Measurement
What do psychologists have to think about when designing studies and interpreting results? In this lesson, you'll explore how the scientific method can help with the difficult task of studying behaviors and their potential causes.
2. Types of Research Designs in Psychology
What are the three main research designs, and what are their advantages and disadvantages? In this lesson, you'll explore the different goals behind descriptive, correlational and experimental research designs.
3. Reliability and Validity
How do validity and reliability contribute to study design in psychology? In this lesson, you'll look at how experiments can fail reliability and validity requirements to get an idea of the challenges behind conducting significant psychological research.
4. Statistical Analysis
What are the two main types of statistics used by psychologists? In this lesson, you'll start to see what psychologists need to do to analyze their data and test the significance of their results.
5. Percentile Rank in Statistics: Definition & Formula
In this lesson, you will learn to define percentile rank and learn how it is calculated. Following this lesson, you will have the opportunity to test your knowledge with a short quiz.
6. Calculate Variance from the Mean: Formula& Examples
In this lesson, we'll define the terms needed to calculate variance, and we'll discuss the process for determining variance from the mean of a set of numbers. You can also practice with an example that provides easy step-by-step calculations.
7. Face Validity: Definition & Examples
Face validity is defined as the degree to which a test seems to measure what it reports to measure. Learn more about face validity from examples, then test your knowledge with a quiz.
8. Factor Analysis: Confirmatory & Exploratory
A factor analysis is a statistical procedure that is used in order to find underlying groups of related factors in a set of observable variables. Learn about the different types of factor analyses and more.
9. Fecundity vs. Fertility: Definition & Overview
In this lesson, we will learn about fecundity and fertility and how they are different. Learn more about fecundity and fertility from examples and then test your knowledge with a quiz.
10. Internal Validity in Psychology: Threats, Definition & Examples
Internal validity is a scientific concept that addresses the relationship between two variables. It refers to the extent that a study can rule out or make unlikely alternate explanations of the results.
11. Regression To The Mean in Psychology: Definition & Example
Regression to the mean occurs when the second measurements of a particular variable are less extreme than the first. Learn about regression to the mean, random variance, and more.
12. Z-Scores in Statistics Explained: Formula, Overview
The z-score is the number of standard deviations away from the mean. It allows for standardizing scores so that they can be compared across samples or tests.
13. Leading Questions: Examples & Definition
You've probably heard the term 'leading question' used in a courtroom context, but they're more common than you might think. In this lesson, learn what defines a leading question, identify common characteristics, and explore examples.
14. Likert Scale: Definition, Examples & Analysis
Did you know that the term 'Likert scale' is named after University of Michigan sociologist Rensis Likert? In this lesson, you will learn more about Likert scales through a set of examples. Following the lesson, you can test your knowledge with a quiz.
15. Electroencephalogram: Definition, Procedures & Tests
In this article, you will learn what an electroencephalogram (EEG) is and how it is recorded. You will also learn how is used by researchers to study sleep and by clinicians to study seizures.
16. Hindsight Bias in Psychology: Definition & Examples
Hindsight bias is a common bias that everyone experiences. You have probably experienced it numerous times in your life without even realizing it. In this lesson, you will learn the definition of hindsight bias and be provided with some examples.
17. Application of Statistics in Psychology
In this lesson, we'll talk about how psychologists use descriptive statistics and inferential statistics in social research. You'll learn how these statistics differ and why a researcher would use one over the other.
18. What is the Thematic Apperception Test (TAT)?
In this lesson, you'll learn about the Thematic Apperception Test: what it is, its purpose, how it has evolved, how it is administered and scored, and its major criticisms as a personality assessment tool.
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Other chapters within the Intro to Psychology: Help and Review course
- History and Approaches in Psychology: Help and Review
- Biological Bases of Behavior: Help and Review
- Sensation and Perception: Help and Review
- States of Consciousness: Help and Review
- Learning: Help and Review
- Cognition: Help and Review
- Motivation and Emotion: Help and Review
- Developmental Psychology: Help and Review
- Personality: Help and Review
- Social Psychology Topics: Help and Review
- Psychological Disorders and Health: Help and Review
- Psychological Treatments: Help and Review