Research Variables: Dependent, Independent, Control, Extraneous & Moderator


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question 1 of 3

If I release spiders into a room and measure how long it takes people to get out of the room, what is the independent variable?

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1. A researcher wants to figure out if uncomfortable seats in a classroom will increase the research participant's attention to the lesson and decrease their fidgeting. Why are attention level and fidgeting the dependent variable?

2. Which of the following best describes control variables?

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About This Quiz & Worksheet

Test your ability to understand how different variables in research can impact a study's outcome. Quiz questions assess your knowledge of control variables and examples of variables.

Quiz & Worksheet Goals

In these assessments you'll be presented with a situation and asked to identify the following variables:

  • Independent
  • Dependent
  • Control
  • Moderating

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information from the related psychology lesson
  • Information recall - access the knowledge you've gained regarding control variables
  • Problem solving - use acquired knowledge to solve research variables practice problems

Additional Learning

To review these concepts further, read through the brief lesson Research Variables: Dependent, Independent, Control, Extraneous & Moderator. This lesson will help you:

  • Identify what a variable is and its importance in a study
  • Understand the difference between a dependent and an independent variable
  • Recall how confounding variables and extraneous variables can impact the outcome of the study in ways the researcher did not plan
  • Learn how control variables and moderator variables help reduce unwanted variables and how it gives the researchers more control