The interviewer wants to know that, if faced with a difficult ethical situation, you will make the right decision. Ethical decisions speak to an employee's honesty and integrity, which is important to any company. In the scientific field, it is especially important to report any ethical concerns, as some poor ethical decisions can result in the invalidation of data and testing. Talk about a time you were faced with an ethical decision or a time that you witnessed someone else making a poor ethical decision and how you handled it. Ethical decisions can involve reporting false data, false time reporting, and violating confidentiality, to name a few.
