In-class Assignment – 2
Please read the scenarios below and answer the following questions:
Scenario 1:
Participants were randomly assigned to one of the four groups to investigate how different types of exercise and times of day influence their perceived energy levels. These groups included individuals engaging in cardiovascular exercise either in the morning or evening, as well as those undertaking strength training during morning or evening sessions. Perceived energy levels were rated on a scale ranging from 1 to 10.
A. What is the research design? (e.g., between, within, or mixed design)
B. What is the design format of the study? (e.g., 2 X 2, 3 X 2)
C. What are the independent variables?
D. Please indicate whether each independent variable is a between-subjects factor or a within-subjects factor.
E. What are the levels of the independent variables? Please indicate for each one.
F. What is the dependent variable?
Scenario 2:
Sixty employees were randomly assigned one of the three different office layouts: Open Workspace, Cubicles, and Private Offices. Half of the employees were assigned to an 8-hour shift, while the remaining half were assigned to two 4-hour blocks with a break in between. Over the course of three weeks, each office layout was assigned for one week, during which employees experienced three levels of ambient noise: Low, Moderate, and High, regulated by background sound systems. Throughout each workday, productivity was assessed by measuring the hourly output of lines of code written.
A. What is the research design? (e.g., between, within, or mixed design)
B. What is the design format of the study? (e.g., 2 X 2, 3 X 2)
C. What are the independent variables?
D. Please indicate whether each independent variable is a between-subjects factor or a within-subjects factor.
E. What are the levels of the independent variables? Please indicate for each one.
F. What is the dependent variable?
Scenario 3:
A school district wants to compare the effectiveness of three different teaching methods for science subjects. Each student’s study schedule can be arranged as either a single 3-hour session or three 1-hour sessions. Sixty students are chosen as the participants for this study. Half of the students study in a single 3-hour session, while the other half study in three 1-hour sessions. All students experience three different teaching methods over the course of three weeks (Week 1 = Lecture-based, Week 2 = Interactive, Week 3 = Self-study). Each week, each student’s test scores are measured.
A. What is the research design? (e.g., between, within, or mixed design)
B. What is the design format of the study? (e.g., 2 X 2, 3 X 2)
C. What are the independent variables?
D. Please indicate whether each independent variable is a between-subjects factor or a within-subjects factor.
E. What are the levels of the independent variables? Please indicate for each one.
F. What is the dependent variable?
Scenario 4:
To measure the effect of both diet and sleep on stress levels, a researcher asks 20 participants to record their stress levels at the end of a week during which they followed a normal diet. Each participant then records their stress levels at the end of the following week, during which they followed a low-carb diet. The same procedure is followed for the next two weeks, except participants are required to sleep for exactly 8 hours each night in one week and 6 hours each night in the other week.
A. What is the research design? (e.g., between, within, or mixed design)
B. What is the design format of the study? (e.g., 2 X 2, 3 X 2)
C. What are the independent variables?
D. Please indicate whether each independent variable is a between-subjects factor or a within-subjects factor.
E. What are the levels of the independent variables? Please indicate for each one.
F. What is the dependent variable?
