In an experiment, Lee Ross set up a simulated quiz game. He randomly assigned some Stanford University students to play the role of questioner, some to play the role of contestant, and others to observe. Results indicated that:

the contestants and observers thought the questioners were more knowledgeable than the contestants.

Explanation: Ross et al published a paper in the journal of personality and social psychology in 1977 titled

"Social Roles, Social Control, and Biases in Social-Perception Processes". They demonstrated that our actions and perceptions are determined by roles we have to play in interpersonal encounters; this is the biasing effect social roles have on performance.

In this instance the observers and the contestants perceived the questioners as having superior knowledge as the questioners were given latitude in how they frame the questions. Due to their social roles, the questioners were "the powerful" while the contestants and observers were "the powerless" playing out their roles and not taking into account the biasing effect.

If the roles were switched around, the outcome would still be the same with each group irrespective of their actual ability and knowledge.

i believe

clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

hope this

i am brianly

sorry if this doesn't

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.