Sometimes a researcher subtly communicates his/her expectations to the subjects, who in turn make the prediction occur. this subtle communication by the researcher of his/her expectations is known as the while the subjects behaving in ways that make the prediction occur is known as a(n)

I believe the answer is: Researcher bias; self-fulfilling prophecy

An example of a researcher bias would be a supporter from a democratic party who conducted a research on how well democratic policies resulted in society, and tend to only see the positive sides while overlooking the negative sides.

Examples of self fulfilling prophecy would be someone who believe that he could never achieve anything in life, and choose to not making any efforts because of it. Which lead to them actually not achieving anything in life.

what are the statements