The epidemiology collection looks at research methods used to study diseases in society. The first section explores the critical role epidemiology plays in establishing a link between smoking and lung cancer. The second section illustrates the difference between causation and correlation. The third section explains the concepts of reliability and validity.

Encoded with permission for digital streaming by Infobase on March 20, 2014. Learn360 is distributed by Infobase for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware.

Cause and Effect Relationship (3:14) -- Cross-Sectional Study (2:06) -- Cohort Study/Longitudinal (1:39) -- Case Control Study (1:45) -- Randomized Control (3:14) -- Correlation and Causation: Illustrating the Difference (3:42) -- Reliability and Validity (4:03).