Right actions and institutions maximize aggregate happiness.
- Aggregate: average or total happiness of all affected, taken together ("aggregated"). Note that "average" and "total" aren't necessarily equivalent. [Example]
Hedonistic conception: an individual is happy to the extent that she or he (or it) experiences pleasure and does not experience pain.
Preference- or desire-based conception: an individual is happy to the extent that she or he (or it) achieves an integrated satisfaction of his/her preferences (or desires, plans, projects, etc.).