Which statement provides the best operational definition of childhood obesity

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A measurement is considered ______ if it actually measures what it is intended to measure, according to the topic of the study.

• reliable
• sociological
• valid
• quantitative

Sociological studies test relationships in which change in one ______ causes change in another.

• test subject
• behavior
• variable
• operational definition

In a study, a group of ten-year-old boys are fed doughnuts every morning for a week and then weighed to see how much weight they gained. Which factor is the dependent variable?

• The doughnuts
• The boys
• The duration of a week
• The weight gained

Which statement provides the best operational definition of “childhood obesity”?

• Children who eat unhealthy foods and spend too much time watching television and playing video games
• A distressing trend that can lead to health issues including type 2 diabetes and heart disease
• Body weight at least 20 percent higher than a healthy weight for a child of that height
• The tendency of children today to weigh more than children of earlier generations

Which materials are considered secondary data?

• Photos and letters given to you by another person
• Books and articles written by other authors about their studies
• Information that you have gathered and now have included in your results
• Responses from participants whom you both surveyed and interviewed

Why is choosing a random sample an effective way to select participants?

• • Participants do not know they are part of a study
  • The researcher has no control over who is in the study
  • It is larger than an ordinary sample
  • Everyone has the same chance of being part of the study
  
  
  

Which research approach is best suited to the scientific method?

• • Questionnaire
  • Case study
  • Ethnography
  • All of the above
  
  
  

The main difference between ethnography and other types of participant observation is:

• ethnography isn’t based on hypothesis testing
• ethnography subjects are unaware they’re being studied
• ethnographic studies always involve minority ethnic groups
• ethnography focuses on how subjects view themselves in relationship to the community

Which best describes the results of a case study?

• • It produces more reliable results than other methods because of its depth
  • Its results are not generally applicable
  • It relies solely on secondary data analysis
  • All of the above
  
  
  

Using secondary data is considered an unobtrusive or ________ research method.

• • nonreactive
  • nonparticipatory
  • nonrestrictive
  • nonconfrontive
  
  
  

To study the effects of fast food on lifestyle, health, and culture, from which group would a researcher ethically be unable to accept funding?

• • A fast-food restaurant
  • A nonprofit health organization
  • A private hospital
  • A governmental agency like Health and Social Services
  
  
  

Licenses and Attributions

Which of the following best characterizes an operational definition?

What is the main difference between ethnography and other types of participant observation?

Which person or organization defined the concept of value neutrality?

What term refers to the extent to which operational definitions measure what was intended?