Answer :
The facts stipulated in the experiment by Jecker and Landy support the notion of the Ben Franklin effect.
What is the Ben Franklin effect?
This effect of psychology, published in the book "You Are Not So Smart" by David McRaney, indicates that a person tends to have a higher esteem of a person to whom he does a favor or to whom he helps, than of others that don't.
Therefore, when the examiner requests a monetary compensation given directly to him, as a favor, he obtained a higher esteem and evaluation of said persons.
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