Psychology is the science that studies the behavior and mental processes of individuals (psychism). To say that psychology is a science means that it is governed by the same laws as the scientific method which govern other sciences: it seeks objective knowledge, based on empirical facts.
Psychology is considered a science because it uses empirical reasoning and the scientific method to ask questions and examine hypotheses about human behavior and mental function.
Explanation:
an university ofgeneva student
Because the witnesses had different viewpoints so they might have seen different things..
If for example the witness is somehow related to the victim, his/her point of view might have been compromised and couldn't be used
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They experience Chronic Stress, typically when a person cope up with poverty, crime, and unemployment in their everyday environment because they had no control over this and they suffered for this stress for a long period of time. It is also an emotional pressure.