Which are the best experiments?
A) those in which all variables are held constant except the ones manipulated
B) those in which the subjects are unpaid volunteers
C) those in which all variables are allowed to act freely
D) those in which two variables are held constant while all of the others are manipulated

Question

Quizplus · Accepted Answer

Experiments in which all variables are held constant except the ones being manipulated are considered the best because they allow for precise control and isolation of the variable being tested. This provides more accurately measurable results and minimizes the influence of confounding variables.

Which Are the Best Experiments