The Great Pepsi Versus Coke Experiment 4. The independent variable in this case was if the taste tester received Coke or Pepsi in each of their five cups, as this was able to be manipulated by the Fluid Dispensing Engineer. To learn the characteristics of a well defined experiment. ) But in 1975, Pepsi started a marketing campaign that gave Coke a run for its money: the “Pepsi Challenge,” a blind taste test showing more people preferred Pepsi over Coke. Finally, the experiment is critiqued in terms of how well it met the standards for a good experiment. Due to this process, whether Coke or Pepsi was in each of the cups can also be referred to as a true independent variable, due to its ability to be randomly assigned, which lessens the chance of a confounding variable being present. Groups are then formed with one of these students in each group to be the tester. Roles: Within each group of four students, assign each student to one of the following roles. Media Project: How Many Emojis are Needed to Get Your Feelings Across? Whether or not that is an effective palate cleanser, however, is certainly up for debate. Give the taste tester a palate cleanser after each drink. The results were remarkable; people picked Pepsi over Coke by a significant margin. Growth of E. coli (strain MG1655) in caffeine-free Coca Cola medium vs. caffeine-free Pepsi Cola medium. Dr. MacFarlane asked those who believed very strongly that they could tell the difference between Coke and Pepsi to raise their hands, and proceeded to pick those people to be the taste testers. At malls, shopping centers, and other public locations, a Pepsi representative sets up a table with two white cups: one containing Pepsi and one with Coca-Cola. The carbon dioxide in the soda comes out of solution very suddenly, shooting up into the sky and drenching anyone within range with soda. Synthetic Remarks 2011, 1, 1-2.. Introduction. As well, there was a lack of random assignment in regards to the Coke vs. Pepsi research design as the Executive Soda Analysts were chosen by volunteer. Try to make sure that you have one person in each group that thinks they can distinguish between Coke and Pepsi. Change ), You are commenting using your Facebook account. For more information about the peer review process itself, please see https://serc.carleton.edu/teachearth/activity_review.html. Coke VS Pepsi Blind Taste TestThis video was inspired by @BenDeen's coke vs pepsi test, after someone linked his video in one of my comments. To address the longest-standing and most burning question in every aspect of our existence – is it under controlled conditions possible to really taste the difference between Coca Cola and Pepsi Cola? In the first stage of the activity students design and conduct the experiment. It was a blind taste test to show people preferred Pepsi over Coke. Coke got high marks for its just-perfect carbonation, nice sweet flavor and overall refreshing quality. Students are asked to self identify who can correctly identify Coke or Pepsi in a blind taste test. ( Log Out /  The conclusion we drew was not valid due to the limitations and confounding variables of the research design. Your … In the second part of the activity students use Sampling SIM software (freely downloadable from http://www.tc.umn.edu/~delma001/stat_tools/) to simulate and gather information on what would be expected under chance conditions (i.e., if students obtained correct answers only by guessing). Overall, Coca-Cola continues to outsell Pepsi in almost all areas of the world. – we conducted the following experiment, in accordance with the highest standards of the scientific method. This activity was selected for the On the Cutting Edge Reviewed Teaching Collection, This activity has received positive reviews in a peer review process involving five review categories. They found that, when the colas were tested anonymously, there was no preference between Coke and Pepsi, and brain areas concerned with perception and decision making were active. The pourers are produce random series of Coke or Pepsi using a coin to determine what the tasters would taste. To learn the difference between an experiment and an observational study. The long-standing conundrum of why Coke sells more than Pepsi despite being less popular in blind taste tests may have been solved, with brand love found to be just as important as taste… Due to this fact, the results of the experiment cannot be generalized to the entire population of soda drinkers, as one class cannot be representative of the “people” addressed in the research question. People say they can tell the difference between Pepsi and Coke, in my opinion they both taste the same! That idea was the Pepsi Challenge. To learn that randomizing the assignment of treatments protects against confounding and makes cause and effect statements possible. To learn to understand and recognize instances of experimental control. The challenge originally took the form of a single blind taste test. Pepsi Pop Quiz 2. Change ), You are commenting using your Twitter account. In class we conducted an experiment to see of certain students could taste the difference between Coke and Pepsi in random samples. Click here for the Coke Versus Pepsi: Taste-Testing the Brands (Slideshow) Strangely enough, Coca-Cola and PepsiCo have been fighting over our tastebuds since the 19th century — literally. This study is neither the first nor the last word on Coke or Pepsi or letter preference. The Text Widget allows you to add text or HTML to your sidebar. First, students are asked to consider how to design an experiment that will allow them to determine if anyone can correctly identify two different brands of cola in a blind taste test. Part I: Setting the Stage The following activity is a great way to “set the stage” on the first day of class and give your students an overview of what they’ll be studying during the year. These people may switch groups when the taste testing begins so they will not know the order of colas to be tested. 10 Dixie cups per group for taste testing, 8 additional Dixie cups for clearing the palate, Coke and Pepsi (4 cans of each is enough for 8 groups), Coke/Pepsi pourer slips, where each group is given a random order of Coke and Pepsi over 10 trials, Sampling SIM software loaded on the computer or another simulation program or applet (see Available Technologies) Lin Yu Shen Married, Bad Governance Pdf, 8 Inch Twin Mattress Walmart, Carnoustie Burnside Scorecard, Gold Mining Inc, Rockland Lake Golf Course,