An experiment is conducted examining the effects of a new type of toothpaste on reducing cavities. Individuals in the treatment condition are given the new toothpaste; individuals in the control condition are given the standard toothpaste, but are told that they're receiving the new toothpaste. At the end of the experiment, the control group participants demonstrate a slightly higher decline in cavities. This is an example of a(n):____.
a. Wording bias.
b. Voluntary response bias.
c. Over-sampling effect.
d. Placebo effect.
d. Hawthorne effect.
The experimentaleffect highlighted by the scenario described would most likely be an example of placeboeffect.
An observed change in the control group which are being given the placebowould have been triggered due to psychologicalexpectationbased on the information given. Hence, this is called the placeboeffect.
The standardtoothpaste was not suppose to cause declinein cavities, however, since the group have been told that they we given the newtoothpaste which is said to reduce cavities, this could trigger a psychological change hence causing them to have higher cavity decline.
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