The scientific method provides the framework for all scientific research, including nutrition science. Choose the statement below that lists steps of the scientific method in the correct order.
a. accept, reject, or modify hypothesis, conduct experiment, observe phenomenon; generate hypothesis.
b. generate hypothesis, observe phenomenon, conduct experiment, accept, reject, or modify hypothesis.
c. accept, reject, modify hypothesis, observe phenomenon; conduct experiment, generate hypothesis.
d. observe phenomenon; generate hypothesis, conduct experiment, accept, reject, or modify hypothesis.
Althouh the scientific method should be an integral part of the nutrition research, a study can be designed in a wide varlety of ways. Each study design presents unique advantages and challenges with implementation, and also in the type of data that can be collected. Choose the item below that correctly describes a type of research study.
A. Observational studies can be used to prove cause and effect.
B. A clinical trial is an example of an epidemiological study.
C. A study that compares a aroup of people with diabetes to a similar aroup of people without diabetes is an example of a case-control study.
D. In a single-blind experiment, the researchers do not know which group receives the treatment.
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Ответ:
1) d. observe phenomenon; generate hypothesis, conduct experiment, accept, reject, or modify hypothesis.
C. A study that compares a aroup of people with diabetes to a similar aroup of people without diabetes is an example of a case-control study.
Explanation:
Scientific method is a step by step procedure ranging from observing a problem to actual experimentation that aims at investigating a problem. The steps involved in the scientific method are as follows:
a)observe phenomenon; This precedes every experiment in the scientific method.
b) generate hypothesis: This is a testable explanation given as a possible solution to the observed problem.
c) conduct experiment: The hypothesis is tested via experimentation.
d) accept, reject, or modify hypothesis: Based on the result of the experiment, the hypothesis can be rejected, accepted or even modified.
Question 2:
Case control study is a type of study design that uses or compares a group of affected individuals (by a disease) called CASES and unaffected individuals called CONTROL. In this case, A study that compares a group of people with diabetes (cases) to a similar aroup of people without diabetes (control) is an example of a case-control study.
Ответ: