A group that closely matches the characteristics of its population as a whole:

Established to protect the rights and welfare of human research subjects.

Each participant must sign an informed __________________ form before they can participate.

If participants feel uncomfortable or feel they do not wish to continue taking part, then they can _________________________________.

Any data collected in the experiment should remain completely ___________________.

Giving participants an explanation of the study in order to help them leave in a similar frame of mind as when they entered the experiment.