Zhongping's research focuses on how those who have wealth and power are socialized differently from those who do not have wealth and power. zhongping's research supports the perspective

answer; i believe the first answer to be (independent; /// and the second answer is (french); good luck

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.