The researcher is considering finding a sample of 400 teenagers between the age of 13 and 16. After gaining parental consent, the researcher will randomly select 200 teens who will have unlimited screen time and 200 who will have restricted screen time of less than 14 hours per week (controlled through software). After 10 months the teenagers will be evaluated by a psychiatrist who is unaware of the weather their phones were restricted for evidence of depression. a) Is the design of this study experimental or observational? Explain. b) Does the design of the study allow the researcher to establish a cause and effect relationship between smartphone use and onset of depressive symptoms? 10. The research is also considering finding a random sample of 400 teenagers who agreed to be surveyed. They will then ask them how many hours per week do they use their phone and a series of questions to determine if they have symptoms of depression. a) Is the design of this study experimental or observational? Explain. b) Does the design of the study allow the researcher to establish a cause and effect relationship between smartphone use and onset of depressive symptoms?
9. The researcher is considering finding a sample of 400 teenagers between the age of 13 and 16. After gaining parental consent, the researcher will randomly select 200 teens who will have unlimited screen time and 200 who will have restricted screen time of less than 14 hours per week (controlled through software). After 10 months the teenagers will be evaluated by a psychiatrist who is unaware of the weather their phones were restricted for evidence of depression.
a) Is the design of this study experimental or observational? Explain.
b) Does the design of the study allow the researcher to establish a cause and effect relationship between smartphone use and onset of depressive symptoms?
10. The research is also considering finding a random sample of 400 teenagers who agreed to be surveyed. They will then ask them how many hours per week do they use their phone and a series of questions to determine if they have symptoms of depression.
a) Is the design of this study experimental or observational? Explain.
b) Does the design of the study allow the researcher to establish a cause and effect relationship between smartphone use and onset of depressive symptoms?
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