General Discussion

We have ways to account for people lying on tests and questionnaires.
And then have a way to account for that lying in the statistical analysis.

It is similar to margin of error statistics.
You can measure the amount of error in your results and account for that in the analysis.
People always talk about measurement error, it is not considered cheating at all.

It is called the scientific method and research design.

Well trained and ethical scientists want the truth and reality.
And can measure how many people are lying to them