Whether bedtime routine intervention improves sleep quality

Question

Assignment task:

Scenario A: A health psychologist is interested in whether a bedtime routine intervention improves sleep quality in college students. Participants are randomly assigned to one of three groups for two weeks: Follow a structured sleep hygiene routine (e.g., no screens an hour before bed, consistent bedtime, relaxation activity), follow a modified routine that includes screens (watching a show or using social media before bed), and maintain their usual bedtime habits (control). At the end of the study, participants complete a sleep quality questionnaire and wear a sleep tracker to record sleep duration. Need Assignment Help?

Question at position 1: What is the independent variable in scenario A?

• Sleep quality
• Hours of sleep
• The researcher
• The participants
• Type of bedtime routine

Question at position 2: How many levels are there for this IV?

• 2
• 1
• 4
• 3

Question at position 3: What type of IV best describes the IV in Scenario A? Explain your reasoning and why you think this type best describes this IV. What type of IV best describes the IV in Scenario A? Explain your reasoning and why you think this type best describes this IV.

Question at position 4: What is the dependent variable in scenario A?

• Regularity of sleep routine
• The participants
• Sleep quality
• The researcher
• Type of bedtime routine

Question at position 5:

Provide an operational definition for the dependent variable in scenario A. Some important information that needs to be included in your operational definition includes:

• What is the operational definition of your dv (how do you define it)?
• How will you record or measure the dv?

Question at position 6: What is a possible extraneous variable for Scenario A (You may list more than one, but you must give at least one!). Explain why you think this is an extraneous in this study. What is a possible extraneous variable for Scenario A (You may list more than one, but you must give at least one!). Explain why you think this is an extraneous in this study.

Question at position 7: How could the extraneous variable be fixed for Scenario A? Be sure to tell me what technique you are using (constancy, repeated measures, randomization, elimination, or balancing), as well as how you would apply that technique to this specific scenario, and how that would fix this extraneous variable.

Scenario B: A researcher investigates whether payment method impacts how much participants are willing to give to charity. Participants are given $20 and asked to decide how much of this money to donate to a local charity. They are randomly assigned to different payment methods: cash, credit card, or mobile payment (e.g., Venmo).

Question at position 8: What is the independent variable in scenario B?

• Type of charity
• The researcher
• Participant income level
• Payment method
• Amount donated

Question at position 9: How many levels does this IV have?

• 3
• 2
• 4
• 1

Question at position 10: What type of IV best describes the IV in Scenario B?

• Participant
• Physiological
• Experience
• Stimulus

Question at position 11: What is the dependent variable in scenario B?

• Participant income level
• Payment method
• Type of charity
• Amount donated
• The researcher

Question at position 12: Provide an operational definition for the dependent variable in scenario B. Some important information that needs to be included in your operational definition includes:

What is the operational definition of your dv (how do you define it)?

How will you record or measure the dv?

Question at position 13: What is a possible extraneous variable for Scenario B (you may list more than one, but you must give at least one!). Explain why you think this is an extraneous variable in this study.

Question at position 14: How could the extraneous variable is fixed for Scenario B? Be sure to tell me what technique you are using (constancy, repeated measures, randomization, elimination, or balancing), as well as how you would apply that technique to this specific scenario, and how that would fix this extraneous variable

Scenario C: A social psychologist wants to know if the type of online discussion format affects perceived sense of belonging in a virtual class. Students are randomly assigned to one of three discussion types: text-only forum, video-based discussion, or mixed text-and-video forum. At the end of the semester, students complete a belongingness questionnaire.

Question at position 15: What is the independent variable in Scenario C? In-class participation

• Sense of belonging
• Type of discussion format
• The course
• Student GPA
• The professor

Question at position 16: How many levels does this IV have?

• 4
• 1
• 3
• 2

Question at position 17: What type of IV best describes this IV? What type of IV best describes this IV?

 

Question at position 18: What is the dependent variable in Scenario C?

• Type of discussion format
• Sense of belonging
• The professor
• Student GPA
• In-class participation
• The course

Question at position 19: Provide an operational definition for the dependent variable in scenario C. Some important information that needs to be included in your operational definition includes:

• What is the dv (how do you define it)?
• How will you measure or record the dv?

Question at position 20: What is a possible extraneous variable for Scenario C (you may list more than one, but you must give at least one!). Explain why you think this is an extraneous variable in this study.

Question at position 21: How could the extraneous variable be fixed in Scenario C? Be sure to tell me what technique you are using (constancy, repeated measures, randomization, elimination, or balancing), as well as how you would apply that technique to this specific scenario, and how that would fix this extraneous variable.