Question

Do children prefer purple juice or yellow juice? Two different supplements, which have no effect on taste, are used on identical juice to produce purple juice or yellow juice. Volunteer children are randomly assigned to either purple juice or yellow juice, and they are asked to rate the juice on a scale from 1 point to 10 points. Is blinding demonstrated in the experiment? No, because the volunteers do not know the color juice they are getting Yes, by having the experimenter in a separate room pick one of the two containers at random and having a juice pulled from that container remotely Yes, by having the statistician analyzing the results not know which volunteer sampled which juice Yes, by having the volunteers wear a blindfold while drinking the juice out of the container, so that they don't know the color juice they are tasting No, because the volunteers know whether they are drinking purple juice or yellow juice

Answer 1

f.  No, because the volunteers know whether they are drinking purple juice or yellow juice

I took the quiz and got it right :)

Answer 2

In this experiment, the blinding is not demonstrated in this experiment Thus, the correct choice is - No because the volunteers know whether they are drinking purple juice or yellow juice

Blinding is the process used in experimental research by which study participants or the persons providing the intervention and data analysts are kept unaware about the control vs intervention data or variables.

• The experimenter or the subjects does not know which treatment is given to a subject.
• The idea is to avoid bias which the experimenter might otherwise introduce.
• Certain information that might lead to conscious or subconscious bias on their part

In this case, all the subjects know whether they had a yellow drink or purple drink so they know the treatment difference so it is not blind research.

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