Principles of Nutrition and Human Development Chapter 2
Which of the following statements is false? a. All nutritionists are registered dietitians. b. The R.D. credential is legally protected. c, Because of their college educational backgrounds, registered dietitians are generally reliable sources of nutrition information. d. All of these choices are correct.
a. All nutritionists are registered dietitians.
A researcher is conducting a study where she has all participants consume 8 ounces of yogurt per day for 3 months. Some of the yogurt has added live bacteria and some does not. The researcher wants to evaluate if the added live bacteria has a benefit in preventing diarrhea. The group of subjects receiving the yogurt with added live bacteria is called the _____ group. a. experimental b. control c. prospective d. epidemiological
a. experimental
A researcher wants to determine if colon cancer is more prevalent in Japanese males or American males. To make this determination he will conduct a/an _____ study. a. experimental b. control c. prospective d. epidemiological
a. experimental
Nutrition is an evolving science, therefore, new dietary advice can be expected regularly. a. true b. false
a. true
_____ is the presentation of health information that appears to be factual and obtained by scientific methods, when it is actually not based on facts or scientific evidence. a. Quackery b. Pseudoscience c. Misrepresentation d. Placebo
b. Pseudoscience
An _____ is a personal report or experience, such as how taking megadoses of vitamin C influenced one's health. a. experiential b. anecdote c. introspective d. ordinal
b. anecdote
A researcher has 200 participants who have high blood pressure and 200 participants who have similar characteristics but their blood pressure is normal. She collects dietary intake information for all study participants and evaluates the levels of fish consumption to determine if eating fish regularly has any effect on blood pressure. This is an example of a/an _____ study. a. epidemiological b. case-control c. anecdotal d. prospective
b. case-control
A/an _____ study is one in which neither the participants nor the researchers are aware of who is receiving the placebo or the experimental treatment. a. single-blind b. double-blind c. unblinded d. None of these choices are correct.
b. double-blind
A prospective study is one that identifies a group of people who already suffers from a disease and compares their dietary intakes to a group of people with similar characteristics who do not have the disease. a. true b. false
b. false
An "in vitro" experiment is one that is conducted on whole living organisms such as rats. a. true b. false
b. false
In general, when using the Internet a commercial ".com" site will be a more reliable source of scientifically based health advice than a ".gov" or an ".org" site. a. true b. false
b. false
Which of the following journals is not a peer-reviewed nutrition or medical journal? a. Journal of Nutrition b. Journal of the American Medical Association c. Ladies Home Journal d. Journal of the American Dietetic Association
c. Ladies Home Journal
A _____ is a factor such as a person's age, weight, or environment that can change and influence results of a study. a. hypothesis b. control c. variable d. testimonial
c. variable
Which of the following features is a "red flag" indicating that the source of nutrition information is unreliable? a. Use of vague, meaningless scientific terms b. Simplistic conclusions c. Use of disclaimers such as "Results may vary." d. All of these choices are correct.
d. All of these choices are correct.
The organization responsible for monitoring and enforcing consumer protection laws and for investigating complaints about false or misleading health claims that appear on the Internet is the a. World Health Organization. b. Food and Drug Administration. c. American Dietetic Association. d. Federal Trade Commission.
d. Federal Trade Commission.
