Quasi-Experimental Designs: Definition, Characteristics, Types & Examples


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Marco is conducting a quasi-experiment, while Maria is conducting a true experiment. What is the main difference between Marco's and Maria's experiments?

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1. Hannah tests her subjects, gives them a treatment, and then tests them again. What type of quasi-experimental design is Hannah using?

2. Gregg chooses a group of subjects in order to study the effects of age on memory. He starts with a group of three-year-olds, and checks in with that same group of subjects when they are fifteen, thirty, and sixty-five. Which of the following type of experimental design is Gregg using?

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About This Quiz & Worksheet

See how well you can answer questions about how a quasi-experiment differs from a true experiment and what longitudinal designs are. When you finish the quiz, you'll get your scores immediately, and you can re-take it as many times as you need.

Quiz & Worksheet Goals

Use these tools to review:

  • The focus of longitudinal designs
  • Quasi-experiments vs. true experiments
  • How to turn a pretest-posttest into a true experiment
  • What type of design an experiment that examines the effects of brain damage would follow

Skills Practiced

  • Information recall - access the knowledge you have gained regarding the characteristics of a quasi-experiment
  • Reading comprehension - ensure that you draw the most important information from the related lesson, such as what 'Sampled groups along a developmental continuum' refers to
  • Defining key concepts - ensure that you can accurately define main phrases, such as longitudinal design

Additional Learning

You can check out the lesson that goes with these assessment tools at any time. Titled Quasi-Experimental Designs: Definition, Characteristics, Types & Examples, this lesson will give you more information about experiments. You'll work toward the following study goals:

  • Define non-equivalent groups
  • Examine characteristics of a pretest-posttest design
  • Compare and contrast cross sectional designs and longitudinal designs