Types of Experimental Designs
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Questions and Answers

What is a limitation of Pre-Experimental Designs in establishing cause-and-effect relationships?

  • The independent variable doesn’t vary
  • Experimental and control groups are not equivalent (correct)
  • The quasi-experiment lacks internal validity
  • The researcher has limited leverage over participants

What is a key advantage of True Experimental Designs over Pre-Experimental Designs?

  • Greater external validity
  • Lack of random assignment
  • Limited control over study variables
  • Higher internal validity (correct)

Why is random assignment crucial in True Experimental Designs?

  • To guarantee external validity
  • To introduce bias into the study
  • To ensure differences between groups are due to chance (correct)
  • To limit control over study variables

What distinguishes Quasi-Experimental Designs from True Experimental Designs?

<p>Random assignment of participants (D)</p> Signup and view all the answers

Why might the researcher's control over study variables be limited in Quasi-Experimental Designs?

<p>Due to lack of leverage over participant selection (A)</p> Signup and view all the answers

What type of experimental design offers the least amount of control over study variables?

<p>Quasi-Experimental Designs (A)</p> Signup and view all the answers

Which type of design is likely to have the most homogeneity in the selected sample?

<p>True Experimental Designs (A)</p> Signup and view all the answers

What is a key characteristic of Pre-Experimental Designs?

<p>Limited control over study variables (C)</p> Signup and view all the answers

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