MasteringNutrition 1d
observation
how do you initiate the process when planning a research project?
personal interview that collects information from a 24-hour diet recall
how does the national health and nutrition examination survey (NHANES) collect dietary information of Americans?
true
t/f: a double-blind experiment is one in which neither the researchers nor the participants know which group is assigned to which treatment.
false
t/f: a placebo is the misrepresentation of a product, program or service for financial gain.
true
t/f: a registered dietitian is a health professional who has earned a bachelor's degree, has completed extensive nutrition related course work and has successfully complete a national dietetics exam.
true
t/f: for an experiment to be consistent with the principles of the scientific method, it must be repeatable.
true
t/f: the term nutritionist has no precise rules or laws regulating it.
the experimental group
the group given a specific treatment or intervention during an experiment is called?
theory
what is a hypothesis or group of related hypotheses that have been confirmed through repeated scientific experiments called?
clinical trial
what is the best research method to determine the effect of an intervention on health?
observe a phenomenon
what is the first step of the scientific method?
centers for disease control and prevention (CDC)
what is the government based group that protects the health and safety of Americans?
centers for disease control and prevention
what is the leading federal agency in the US that protect human health and safety?
placebo
what is the term for an imitation that has no known physical effect or therapeutic value on the subjects in a research study?
case control study
what is the type of study called that compares a group of individuals with a disease to another similar but healthy group?
nutritionist
what professional title has NO definition or laws regulating it?
nutritionist
which is least likely to be considered a reliable source of nutrition information?
an observational study
what is another name for an epidemiological study?
double-blind, random selection, placebo controlled
Dr. Sullivan is conducting a clinical trial to determine if vitamin Z can improve test performances in an introductory college nutrition course. Dr. Sullivan puts all the students' names in a hat and draws names to determine if they will be placed in the control or the experimental group. The experimental group receives a capsule of vitamin Z and the control group a "sugar pill" that tastes and looks identical to the vitamin z capsule. Neither Dr. Sullivan nor the participants knows who is receiving which treatment. How is the experiment best described?
trustworthy
government source of information are usually...?
