Stats-Ethics

Ethics--Moral principles that govern a person's behaviour. (Oxford English Dictionary)

How do you make ethical decisions? Are you a deontologist or consequentialist?
Deontological (duty based): You have a duty to do the right tihing regardless of the consequences.
Consequential (outcome based: Choose the action that maximise good consequences.
     -Utilitarinism: maximise well-being for the most people.
     -Hedonism: maximise pleasure
In practice, people tend to use a mix of deontological and consequential ethics.

The British Psychological Sciety (BPS) Guidelines respects for autonomy and dignity, approving researches according to harm avoided, risk assessed informed consent and debriefing.
In the UK, strct laws require animal researchers uses the three Rs:
1. Refinement: reduce the severity of inhumance procedures
2. Reduction: in numbers of animals used
3. Replacement: of highly sentient animals whenever possible.