Ch 11: External Validity: Homework Help

About This Chapter

The External Validity chapter of this Research Methods in Psychology Homework Help course helps students complete their external validity homework and earn better grades. This homework help resource uses simple and fun videos that are about five minutes long.

How it works:

  • Identify which concepts are covered on your external validity homework.
  • Find videos on those topics within this chapter.
  • Watch fun videos, pausing and reviewing as needed.
  • Complete sample questions and get instant feedback.
  • Finish your external validity homework with ease!

Topics from your homework you'll be able to complete:

  • Internal validity and replication
  • Generalization types
  • Threats to external validity
  • Reactivity of experimental arrangements and assessment
  • Various methods for increasing external validity

7 Lessons in Chapter 11: External Validity: Homework Help
What is External Validity in Research? - Definition & Examples

1. What is External Validity in Research? - Definition & Examples

The purpose of research is to say something about the real world. But how can a researcher generalize results to the world at large? In this lesson, we'll answer that question as we learn about external validity.

Requirements of External Validity: Internal Validity & Replication

2. Requirements of External Validity: Internal Validity & Replication

In order to generalize results from studies to the real world, there are a couple of things that are required. In this lesson, we look at the requirements for external validity: replication and internal validity.

Generalization & External Validity

3. Generalization & External Validity

The point of research is to be able to generalize findings to the world at large. In this lesson, we'll look at three types of generalizing that make up external validity: across subjects, from procedures to constructs, and beyond the lab.

Threats to External Validity: Sample Characteristics, Stimulus Characteristics & Experimental Arrangements

4. Threats to External Validity: Sample Characteristics, Stimulus Characteristics & Experimental Arrangements

The goal of research is to generalize the results, but there are several things that can get in the way. This lesson examines three threats to external validity: sample characteristics, stimulus characteristics, and multiple-treatment interference.

How Novelty Effects, Test Sensitization & Measurement Timing Can Threaten External Validity

5. How Novelty Effects, Test Sensitization & Measurement Timing Can Threaten External Validity

The purpose of research is to find things out about the world at large. But there are several things that can get in the way of external validity. In this lesson, we'll examine novelty effects, test sensitization, and measurement timing.

Reactivity of Experimental Arrangements & Assessment: Threats to External Validity

6. Reactivity of Experimental Arrangements & Assessment: Threats to External Validity

The goal of research is to say something about what happens in the real world. But what happens if subjects react to the experimental conditions? In this lesson, we'll look at two reactivity threats to external validity.

Methods for Increasing External Validity

7. Methods for Increasing External Validity

External validity is a key component of research. In this lesson, we'll look at several different ways to increase external validity, including aggregation, nonreactive measures, and field research.

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