14 Questions
What is the dependent variable in the study?
The number of pictures correctly identified
Why did the researchers divide the primates into male and female groups?
To test the effect of the supplement on both genders
What is the purpose of the control group in this study?
To provide a baseline for comparison
How many participants are in each of the 4 groups in the 2x2 factorial design?
15
What type of design is used in this study?
2x2 factorial design
What is the purpose of randomly assigning participants to the treatment groups?
To control for extraneous variables
What is the independent variable in the study?
The type of supplement given to the primates
What is the purpose of using a 2x2 factorial design?
To examine the interaction between the supplement and gender
What is the primary purpose of dividing the subject primates by gender in the current study?
To compare the response to the supplement between male and female primates
How many participants will be in each cell of the 2 x 2 factorial design?
10
What type of design is used in the current study?
2 x 2 factorial design
What is the total number of participants in the study?
60
What is the purpose of using a 2 x 2 factorial design in the study?
To examine the interaction between two independent variables
What is the difference between the two treatment conditions in the study?
The dose of the supplement (10 mg vs. 25 mg)
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
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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