Answer: The attribute levels of various people in a group can be brought to the same level through training.
Explanation: I-O psychologists known as Industrial organisational psychologists are psychologists that incorporate psychological theories and principles to organizations. They focus on the health of the mind and body of employees in an organisation.
Generally psychologist believe that every individual is unique in their own way and therefore they never assume that all individuals working in an organisation can attain the same level of attributes.