File:Blind taste test.jpgIn this single blind taste test of two cola brands, the experimenter knows which bottle is which
In marketing, a blind taste test is often used as a tool for companies to compare their brand to another brand. For example, the Pepsi Challenge[1] is a famous taste test that has been run by Pepsi since 1975. Additionally, taste tests are sometimes used as a tool by companies to develop their brand or new products.
Blind taste tests are ideal for goods such as food or wine (see blind wine tasting) that are consumed directly. Researchers use blind taste tests to obtain information about customers' perceptions and preferences on the goods. Blind taste test can be used to:[2]
Blind taste tests require a "blind testing" meaning the people taking the blind taste test are unaware of the identity of the brand being tested,[3] or if done at home this can be as simple as a blindfold over the person taking the test. This means that any bias, preconceived ideas about a particular brand or food, is eliminated. The people taking the test will also be unaware of any changes done to the product.[2]
In the famous Pepsi Challenge,[1] people took a sip from two different unlabelled glasses, not knowing which was Coke and which was Pepsi.
In a single blind taste test, experimenters know information about the participants, but the participants know nothing about the experimenters or the product they are testing. The aforementioned Pepsi Challenge is an example of a single blind test.
In a double blind taste test, the experimenters know nothing about the participants, and the participants know nothing about the experimenters or the product they are testing.
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