Should behavioural screening be part of job hiring process?

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Assessing a person in terms of their behaviour and traits is something that companies and Governmnt agencies are trying to figure . Consider a rude teacher who has good qualifications . What kind of values do such teachers bring to our children ? I have seen teachers who have body shamed , insulted and ridiculed children in front of the whole class. Then , there are some professionals like doctors , government officials who often show lack of empathy or the minimum courtesy to the people approaching them. At same time, we would seen teachers, doctors or government officials who aprt from their qualifications display good ethics and values. We feel better and would feel there is a better world thanks to them. They pass good values to the people around them. So , question is should we not have a behavioural screening as part of any job hiring ? Should it be mandatory or optional?