You want to test people's cola preferences using a taste test of two different brands of cola.The participants will not know which cola they are tasting.However, you are also worried about possible clues you may give the people taking the test, so you decide to use _____ to prevent unwittingly giving the participants any clues to which cola they are tasting.
A)a single-blind experiment
B)a double-blind experiment
C)random selection
D)random assignment

Question

Quizplus · Accepted Answer

A double-blind experiment would be the best choice because it ensures that neither the participants nor the experimenters know which brand of cola is being tasted, eliminating the possibility of unintentional hints or clues being given. A single-blind experiment would only prevent the participants from knowing which cola they are tasting, but the experimenters may give away unintentional clues. Random selection and random assignment are important in experimental design, but they do not directly address the issue of preventing inadvertent hinting.

You Want to Test People's Cola Preferences Using a Taste