Science Fair Presentation
Philip Killgo and Ross Petersen
The placebo effect (Also called the placebo response) is "a remarkable phenomenon in which a placebo -- a fake treatment, an inactive substance like sugar, distilled water, or saline solution -- can sometimes improve a patient's condition simply because the person has the expectation that it will be helpful." - Medicinenet.com
This means when people are given a substance and told it will have a certain effect, they may report experiencing this effect even if they were being lied to.
We asked people to drink from 2 different bottles of water. We told them one was tap water while the other the other was improved natural spring water. However, in reality, they were both the same. After they tasted both, we asked which they preferred and recorded their responses.
26% No preference
- 2nd sample feels smoother
- 2nd sample had a weird after-taste
- They really did taste different, even though they are the same
The participants were also mostly either suspicious or could tell they were the same water, despite what was told to them