Your answer of your question is,
Explanation:
Environment
Look at the way that they act. If they are into doing rebellious things, that could be bad. If they hang out with kids that you know aren't good kids, that could also be bad. If they ask you if you want some drugs or alcohol, that is DEFINITELY bad.
Communicate , Get It In Writing , Stay Up To Date On Current Standards , Always Obtain Informed Consent , Be Sure To Follow Up & Keep An Open Mind