SPSS Output: Factorial ANOVA for Memory Performance Supplement
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Questions and Answers

What is the dependent variable in the study?

  • The gender of the primates
  • The type of supplement given to the primates
  • The number of pictures correctly identified (correct)
  • The dose of the supplement

    • Why did the researchers divide the primates into male and female groups?

  • To test the effect of the supplement on both genders (correct)
  • To reduce the sample size
  • To randomize the assignment of the supplement
  • To test the effect of the supplement only on males

    • What is the purpose of the control group in this study?

  • To provide a baseline for comparison (correct)
  • To test the effect of the supplement on females only
  • To test the effect of the 25 mg dose
  • To test the effect of the 10 mg dose

    • How many participants are in each of the 4 groups in the 2x2 factorial design?

    <p>15</p> Signup and view all the answers

    What type of design is used in this study?

    <p>2x2 factorial design</p> Signup and view all the answers

    What is the purpose of randomly assigning participants to the treatment groups?

    <p>To control for extraneous variables</p> Signup and view all the answers

    What is the independent variable in the study?

    <p>The type of supplement given to the primates</p> Signup and view all the answers

    What is the purpose of using a 2x2 factorial design?

    <p>To examine the interaction between the supplement and gender</p> Signup and view all the answers

    What is the primary purpose of dividing the subject primates by gender in the current study?

    <p>To compare the response to the supplement between male and female primates</p> Signup and view all the answers

    How many participants will be in each cell of the 2 x 2 factorial design?

    <p>10</p> Signup and view all the answers

    What type of design is used in the current study?

    <p>2 x 2 factorial design</p> Signup and view all the answers

    What is the total number of participants in the study?

    <p>60</p> Signup and view all the answers

    What is the purpose of using a 2 x 2 factorial design in the study?

    <p>To examine the interaction between two independent variables</p> Signup and view all the answers

    What is the difference between the two treatment conditions in the study?

    <p>The dose of the supplement (10 mg vs. 25 mg)</p> Signup and view all the answers

    Study Notes

    Research Study Design: Memory Performance Supplement

    • The study aims to test the effectiveness of a new memory performance supplement on primate subjects.
    • The dependent variable is the number of pictures correctly identified by the subjects.

    Study Design and Procedure

    • The study uses a 2 x 2 factorial design with different participants in each cell.
    • The 60 subject primates are divided by gender: 30 males and 30 females.
    • Each gender group is further divided in half and randomly assigned to one of two treatment conditions:
      • 10 mg dose of the supplement
      • 25 mg dose of the supplement

    Independent Variables

    • Gender (male/female)
    • Dose of supplement (10 mg/25 mg)

    Factorial ANOVA Design

    • Two independent variables are crossed to create four treatment combinations:
      • Male, 10 mg dose
      • Male, 25 mg dose
      • Female, 10 mg dose
      • Female, 25 mg dose

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    Description

    Quiz about a research study on the effect of a memory performance supplement on picture identification using SPSS output and factorial ANOVA. Measures the number of correctly identified pictures.

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