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Week 2. How do we know what

Week 2. How do we know what - FDNS 2100 Human Nutrition and...

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FDNS 2100 Lee Human Nutrition and Food How Do We Know What We Know? I 1. How do we know what we know? 2. Scientific Method (1) The process by which scientists, collectively and over time, endeavor to construct an accurate representation of the world a. Observe a phenomenon b. Formulate an ________________ c. Perform an experiment to test hypothesis d. Replicate the findings of the experiment by independent experimenters e. Peer review of results (2) Types of Studies 1 ) Case Studies: studies of individuals 2) Epidemiological studies: studies of populations Migration Studies: studies that follow populations who move from one food environment to another 3) Intervention Studies (Clinical Trial): researchers actively intervene in one group of the population (experimental group) and compare to a group that does not receive the intervention (control group) 4) Laboratory Studies: studies performed under tightly controlled situations; often involve animals (3) “Garlic and Cancer” example 1) Observation 2) Formulate a hypothesis Hypothesis: “Eating garlic prevents cancer” Updated on 011911 1
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Week 2. How do we know what - FDNS 2100 Human Nutrition and...

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