Podcast
Questions and Answers
What is the dependent variable in the study?
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?
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?
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?
How many participants are in each of the 4 groups in the 2x2 factorial design?
What type of design is used in this study?
What type of design is used in this study?
What is the purpose of randomly assigning participants to the treatment groups?
What is the purpose of randomly assigning participants to the treatment groups?
What is the independent variable in the study?
What is the independent variable in the study?
What is the purpose of using a 2x2 factorial design?
What is the purpose of using a 2x2 factorial design?
What is the primary purpose of dividing the subject primates by gender in the current study?
What is the primary purpose of dividing the subject primates by gender in the current study?
How many participants will be in each cell of the 2 x 2 factorial design?
How many participants will be in each cell of the 2 x 2 factorial design?
What type of design is used in the current study?
What type of design is used in the current study?
What is the total number of participants in the study?
What is the total number of participants in the study?
What is the purpose of using a 2 x 2 factorial design in the study?
What is the purpose of using a 2 x 2 factorial design in the study?
What is the difference between the two treatment conditions in the study?
What is the difference between the two treatment conditions in the study?
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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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