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Extraneous & Confounding Variables: Differences & Examples

Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Trevor performs an experiment and determines that only the independent variable caused changes in the dependent variable. Which of the following can Trevor say his experiment has?

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1. Corneisha is doing an experiment to determine whether the amount of time a person spends reading affects their SAT score. After a few of the subjects come to the lab and read for a certain amount of time, one of Corneisha's lamps burns out and therefore makes the lab much darker for the rest of the subjects. In this example, the amount of light is what type of variable?

2. In Keri's study, some of the research participants are in a noisy room and some are in a quiet room. This is an example of which type of extraneous variable?

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About This Quiz & Worksheet

Evaluate your proficiency on the topic of certain variables that can be found in research studies. The following quiz will test your knowledge on subjects such as a confounding variable and types of extraneous variables.

Quiz & Worksheet Goals

You will be required to learn the following in order to pass the quiz:

  • Examples of extraneous variables
  • Confounding variable
  • Differences between extraneous variables and confounding variables
  • Internal validity
  • Types of extraneous variables

Skills Practiced

  • Distinguishing differences- compare and contrast topics from the lesson, such as confounding variables and extraneous variables
  • Defining key concepts- ensure that you can accurately define main phrases, such as internal validity and confounding variable
  • Knowledge application- use your knowledge to answer questions about the different types of extraneous variables

Additional Learning

Review the concepts that are related to variables in a research study by reading through the brief lesson called Extraneous & Confounding Variables: Differences & Examples. This lesson will guide you to:

  • Identify the psychologist responsible for developing a theory that focuses on the development of higher mental abilities
  • Recall what internal validity is and its importance
  • Review what extraneous variables are and the different categories of them
  • Learn about what confounding variables are and how they impact the independent and dependent variables
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