A method or procedure that has characterized natural science since the 17th century, consisting of systematic observation, measurement, experimentation, formulation, analysis, and modification of hypotheses.

A method or procedure that has characterized social science since the 17th century, consisting of systematic observation, measurement, experimentation, formulation, analysis, and modification of hypotheses.

A method or procedure that has characterized natural science since the 18th century, consisting of systematic observation, measurement, experimentation, formulation, analysis, and modification of hypotheses.

A method or procedure that has characterized social science since the 18th century, consisting of systematic observation, measurement, experimentation, formulation, analysis, and modification of hypotheses.