Confounding Variables in Research Methods
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Questions and Answers

In an experiment examining the effect of reward on children's math performance, which of the following is a valid manipulation of the independent variable?

  • Varying the quantity of the reward in different conditions (correct)
  • Providing different types of rewards in different conditions
  • Having the reward present in one condition and absent in another condition
  • Keeping the reward constant across all conditions
  • What does it mean for the independent variable to have two levels?

  • It means there are two different measurements of the independent variable
  • It means there are two different quantities of the independent variable (correct)
  • It means there are two different conditions in the experiment
  • It means there are two different types of the independent variable
  • Which aspect of manipulation is exemplified by having 7 things on the desk in one condition and 2 things on the desk in another condition?

  • Manipulating the quantity of the independent variable (correct)
  • Manipulating the type of the independent variable
  • Manipulating the presence of the independent variable
  • Manipulating the measurement of the independent variable
  • What is the confounding variable in the given experiment?

    <p>The color of the cereal box</p> Signup and view all the answers

    Why is it important to control other variables in an experiment?

    <p>To avoid confounding variables that may affect the observed relationship</p> Signup and view all the answers

    What is the purpose of random assignment in an experimental strategy?

    <p>To balance participant characteristics across different groups</p> Signup and view all the answers

    In the context of the given text, what is the independent variable (IV) in the experiment?

    <p>The type of encouragement given to the children</p> Signup and view all the answers

    What is the dependent variable (DV) in the experiment described in the text?

    <p>The performance of the children in the memory test</p> Signup and view all the answers

    Which group of children received more candies for each correct answer according to the text?

    <p>The group receiving positive encouragement</p> Signup and view all the answers

    What is the primary goal of randomization in research?

    <p>To disrupt any systematic relation between extraneous and independent variables</p> Signup and view all the answers

    Which procedure is commonly used for randomization?

    <p>Coin toss</p> Signup and view all the answers

    What is the name of the condition that receives the treatment or active ingredient in an experiment?

    <p>Experimental condition</p> Signup and view all the answers

    Why is it important to use random assignment in research experiments?

    <p>To minimize the impact of extraneous variables on the results</p> Signup and view all the answers

    What does randomization seek to prevent in research experiments?

    <p>The confounding effect of extraneous variables</p> Signup and view all the answers

    What does the experimental condition refer to in a research study?

    <p>A condition that receives the active ingredient or treatment</p> Signup and view all the answers

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