Ursula works in an office. One day, her boss tells her that researchers will be in the office to observe productivity. Because she knows she is being observed, Ursula finds that she is working harder than she normally does. What is this an example of?
a. the placebo effect.
b. the Heisenberg principle.
c. a single-blind study.
d. the Hawthorne effect.

D.

Explanation:

The Hawthorne Effect was developed by researcher Henry A. Landsberger, in the 1950s. The effect derived its name from the place where Landsberger performed the research.

The Hawthorne Effect is a term used to refer to the ability of people of working hard and giving better performance. When a person becomes a participant in an experiment, according to this effect, the person or the participant tends to perform better and even work harder than before.

The given scenario is an example of the Hawthorne Effect, where Ursula is working harder and giving better performance when under the observation of researchers.

well since twins have about the same dna they dont have one think in common which is the figer print. nobodys fingerprint is the same. if your using twin you would most likely get around the same results for both of them because of the genetics.. i hope this

well the unjest treatment and discrimination did get faced by the idians and soldiers

explanation: