Based on facts and evidence, not subjective. A study can be objective through random allocation, double blind technique, standardised procedures and recording and measurement.
Empirical Methods
Data must be gathered through observations and experiments; through senses.
Replicability
The study and measurements should be able to be repeated to see if similar results can be found.
Hypothesis testing
The theory is developed through hypothesis testing
Falsification
Study should be designed so that the hypothesis can be tested to be right or wrong.
