“one person, one vote” reflects the principle of

“One person, One vote” shows the principle of universal suffrage. Universal suffrage means that a person, especially adults in legal age should vote. In this principle, it shows that people in legal age have the right to vote and are capable to vote.  

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this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.