Ascientist must always try to avoid in scientific experiments.

A scientist must always try to avoid bias in scientific experiments. It is important for scientist to avoid leaning into their bias when trying to confirm their hypothesis. As much as possible the scientist should be able to follow the scientific method to avoid bias. 

relationships play a major role in a human's emotional and mental wellbeing. healthy relationships with the people around you are even linked to a smaller production of cortisol, a stress hormone.