Sample size and controls are features of the scientific inquiry process that are discussed in this quick-paced quip. A comparison is made between randomized clinical trials and epidemiological studies. Terms such as placebo, cohort, inherent flaw, and confounding variables are explained. Viewers learn that such studies can really only provide correlation rather than a true cause-and-effect relationship.

Concepts

epidemiology, the scientific method

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Additional Tags

scientific study, scientific inquiry, epidemiology, science

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Pros

• Helps viewers understand the true nature of scientific inquiry and that everything can be re-evaluated
• Lesson can be customized via a free membership with the publisher
• Assessment questions and links to related websites are provided

Cons

• Narration timing is very fast; if you assign this as homework, students could take the time to back up and review what might have been missed