<P> Experiments might be categorized according to a number of dimensions , depending upon professional norms and standards in different fields of study . In some disciplines ( e.g. , psychology or political science ) , a ' true experiment ' is a method of social research in which there are two kinds of variables . The independent variable is manipulated by the experimenter , and the dependent variable is measured . The signifying characteristic of a true experiment is that it randomly allocates the subjects to neutralize experimenter bias , and ensures , over a large number of iterations of the experiment , that it controls for all confounding factors . </P>
<P> Experiments might be categorized according to a number of dimensions , depending upon professional norms and standards in different fields of study . In some disciplines ( e.g. , psychology or political science ) , a ' true experiment ' is a method of social research in which there are two kinds of variables . The independent variable is manipulated by the experimenter , and the dependent variable is measured . The signifying characteristic of a true experiment is that it randomly allocates the subjects to neutralize experimenter bias , and ensures , over a large number of iterations of the experiment , that it controls for all confounding factors . </P>
what is an experiment that only tests one variable at a time
what is an experiment that only tests one variable at a time
true experiment
true experiment