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.
Introduction to Empirical Research Science is a process, not an accumulation of knowledge and/or skill. âThe scientist is a pervasive skeptic who is willing to tolerate uncertainty and who finds intellectual excitement in creating questions and seeking answersâ Science has a history that pre-dates recorded fact!!!