Quick Answer. In some rare cases, excessive stress causes bleeding between periods. It is more common that another condition is responsible, such as pregnancy, polycystic ovary syndrome, infection, pelvic inflammatory disease or side effects of medication, according to WebMD.
Using the scientific method, you can repeat the experiment to find out for yourself whether or not the other researcher's assertions are true. This is a key factor that separates science from dogma! The other important part of scientific research is that a hypothesis must be falsifiable. A falsifiable hypothesis or theory is one where an experiment or another discovery can prove it to be wrong, untrue, and false.
SCIENTIFIC METHOD OF RESEARCH & ITS SPECIAL FEATURES. Research produces knowledge which could be used for the solution of problems as well as for the. generation of universal theories, principles and laws. But all knowledge is not science. The critical. factor that separates scientific knowledge from other ways of acquiring knowledge is that it uses. scientific approach.