Mental dysfunction in an older adult may seem like a normal part of aging, but it can result from disease or another cause. What should the ER staff do first for a presenting older adult with a mental dysfunction such as extreme confusion?

Review the drugs being taken

Explanation:

Mental dysfunction can be defined as a situation which affect the way a person thinks, act, talk and behave.

A person with mental dysfunction or disorder will often behave abnormal which often affect their relationship with people around them .

Although Mental dysfunction or disorder in an older adult may often seem like a normal part of aging stage but it can always result from disease or another cause therefore the first step an ER staff

Should do before presenting an older adult with MENTAL DYSFUNCTION is to check and review the drugs being taken by them because some drugs when taking by older adult may have adverse effect than when it is been taking by younger adult which may lead to them to begin to behave abnormal or act abnormal and can even lead to extreme confusion in them.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.