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Exam 2: Nutrition Information: Fact or Fiction

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Question 21

Multiple Choice

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A television advertisement for a protein-rich drink includes before and after photos of a young man.In the "before" photo,the man appears unhappy and slim,but he looks thrilled and very muscular in the "after" photo.The narrator claims the man gained 30 pounds of "solid muscle" while drinking the protein formula daily for 2 months.At the bottom of the man's after photo,you notice a statement in small print that's difficult to read.According to the statement,"results may vary." This statement is an example of a

A) disclaimer.
B) placebo.
C) warning.
D) bias.

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Question 22

Multiple Choice

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Which of the following statements is true?

A) A nutritionist has the same credentials as a registered dietitian.
B) In general,registered dietitians are reliable sources of nutrition information.
C) Quackery is the practice of dietetics without proper training and credentials.
D) A person with a PhD has the proper training to be registered dietitian.

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Question 23

Multiple Choice

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A magazine advertisement for a weight loss product includes before and after photos of a woman who supposedly lost 50 pounds in 3 weeks while taking the product.The bottom of the ad includes the statement,"Results are not typical." This statement is an example of a(n)

A medical researcher asked 50 people with painful,arthritic knees to rub a cream that contained vitamin E on their knees for two weeks.At the end of the two weeks,she asked the subjects whether their knee pain improved,stayed about the same,or worsened during the treatment period.All 50 subjects reported improvement in their knee pain.Based on this information,which of the following statements is true?

Which of the following statements is untrustworthy or misleading because it contains a "red flag" of unreliable nutrition-related information?

Having a control group enables researchers to

Researchers are conducting a study to determine the effects of vitamin D on the human body.The study involves providing pills that contain vitamin D to one group of human subjects and pills that do not contain the vitamin or other active ingredients to another group of people.The pills that do not contain vitamin D are

A popular women's magazine has an article about planning a nutritious diet.Which of the following credentials indicate the author is likely to be a reliable source of food and nutrition information?

You recently watched an infomercial at an Internet website in which an actor promoted a new weight loss product.The actor stated that you'll lose weight almost instantly by consuming the product,because it contains a secret herbal formula that's both safe and effective.The promoter also said that you can continue to eat all of your usual foods and still lose weight,while taking the herbal formula.You're concerned that people might waste their money on this product.Which agency should you contact to file a complaint about the website?

Which of the following statements is true?

A group of researchers wants to conduct a scientific study to investigate dietary factors that affect the development of obesity.Which of the following activities is likely to be the first step of their research efforts?

Which of the following statements is true?

Which of the following web sites is most likely a source of biased and unreliable nutrition information?

Phil is a participant in a study designed to examine the effects of taking a new protein-containing product on muscle tissue development.Phil suspects he's in the experimental group,because he's certain his muscles are bigger and stronger as a result of taking the product supplied by the researchers.When the study is completed,Phil learns that he didn't receive the new source of protein.Phil thinks the researchers made a mistake-he's certain his muscle mass increased while he consumed the product.According to this information,Phil's belief that his physical condition improved while he participated in the study is an example of

Zack takes 500 mg of vitamin C daily.He advises his friends to take the vitamin C pills because,he claims,the vitamin protects him from cold viruses.His information about the usefulness of the vitamin is a(an)

Which of the following statements is true?

A scientist would like to collect information concerning the health of a large group of older adults.To obtain this information,the scientist conducts a

Which of the following web sites is most likely a source of biased and unreliable nutrition information?

A researcher observes that first-grade children who only eat foods sweetened with honey seem to behave the same as first-grade children who eat foods sweetened with cane sugar.After making the observation,the research decides to conduct a study to explore whether eating honey has any affect on school-age children's behavior.The researcher wants to follow the basic steps of the scientific method.Now that he's made the observation,his next step will be to

Which of the following statements is true?