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Experiment vs. Observation
Transcript of Experiment vs. Observation
researcher manipulates one of the variables. Experiment Still Confused.... Here's Some Examples Example #1 If you took a bunch of body builders and randomly assigned them to two groups. Then manipulated the independent variable by having one group take the supplement and the other NOT take it. Experiment Vs. Observational Study So Basically... Its Hands On By: Travis Hinton and Trey Townsend Example #2 Scientist want to find out which toothpaste gives better protection against plaque build up. Colgate or Crest? Experiment #2 Cont... Then divide the participants
into two groups. One group gets the Colgate the other the Crest. Observational Study No human intervention
Investigators observe subjects
Variables are not manipulated So Basically... Use Your Eyes!!! Example #1 Find 20 women of which 10 have smoked a pack a day for 10 years while the other 10 have been smoke free for 10 years Experiment #1 Cont.. Then they measure the long capacity of each of the 20 women. Example #2 Researchers want to know if playing video games w/ violent content makes kids more prone to violent behavior. Example #2 Cont. Researchers then have the children play in a controlled environment with other children. Example #2 Cont.. Researchers may ask parents how often a child plays video games and if they have violent content. Example #2 Cont.. Then watch and record any violent behavior. Do You Get It Now?!?!?! THE END References "Observational Study." - Research Without Manipulation. N.p., n.d. Web. 29 Jan. 2013. "What Are Observational Studies?" About.com Longevity. N.p., n.d. Web. 29 Jan. 2013. "BEST WITTED." Experimental and Observational Studies and Levels of Measurement. N.p., n.d. Web. 29 Jan. 2013 Harland, Bryant. "Observational Study vs. Experiments." EHow. Demand Media, 17 June 2011. Web. 29 Jan. 2013. "Disclaimer:
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