I believe the answer is: double-blind experiment
In double blind experiments, the subjects that receive the treatment is remained unknown by both the researchers and the subjects until the experiment is finished. The main purpose of double-blind experiment it eliminate the bias of perception that might exist among researchers.
Anna<span> O. was the pseudonym of a patient of Josef Breuer, who published her </span>case<span>study in his book Studies on Hysteria,</span>
On December 5 or 6 1492 a fateful wind led Christopher Columbus to the island of Haiti that he renamed Española
thinking that it looked like Spain. Guacanagaric, the cacique of the Marien in the northern part of the island, warmly welcomed
Columbus. He thought the Taino looked coward and could easily be defeated and enslaved:
"They...brought us parrots and balls of cotton and spears and many other things... They would make fine servants... With fifty
men we could subjugate them all and make them do whatever we want.
A physician recruiting his patients
<span>In deferential vulnerability the authority over the prospective subject is due to informal power relationships rather than formal hierarchies. The power relationship may be based on gender, race, or class inequalities, or they can be inequalities in knowledge (such as in the doctor-patient relationship). Like institutional vulnerability, deferential vulnerability increases the risk of harm that informed consent would be compromised because it is not fully voluntary.</span>
Trek Effect:<span>A popular </span>sci-fi media franchise<span> set in the future, primarily focusing on the adventures of the personnel of a space </span>navy<span> of an interstellar political </span>federation<span> of which Earth is a charter member.</span><span>
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