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.
Characteristics of Scientific Research. When researches progress to a certain degree, turning over to think about them in time will contribute to advance their process and make them develop healthily in correct direction. Therefore, let's have a look into the characteristics of our work macroscopically and generally.
Constructs in quantitative research. High quality quantitative dissertations are able to clearly bring together theory, constructs and variables. Broadly speaking, constructs are the building blocks of theories, helping to explain how and why certain phenomena behave the way that they do.