Previous studies have demonstrated that the opiate reward is mediated by a dopamine-independent reward system in nondependent animals, and by a dopamine-dependent reward system in dependent animals.
operating system | Super Nintendo Entertainment System | Nintendo Entertainment System | Android (operating system) | Global Positioning System | Solar System | X Window System | Korean Broadcasting System | System of a Down | Domain Name System | Seoul Broadcasting System | North Carolina Community College System | Mutual Broadcasting System | Bulletin board system | system | Turner Broadcasting System | Program and System Information Protocol | Geographic information system | Ubuntu (operating system) | Tokyo Broadcasting System | Federal Reserve System | Youth system | Embedded system | solar system | Seigneurial system of New France | Interstate Highway System | Fedora (operating system) | Trans-Alaska Pipeline System | Network File System (protocol) | English football league system |
Gray's biopsychological theory of personality was informed by his earlier studies with Mowrer on reward, punishment, and motivation and Hans Eysenck’s study of the biology of personality traits.
In addition to its primary work of starting Sunday schools in rural communities, the Sunday and Adult School Union became known for its publications and its ticket reward system for Sunday school students who memorized Scripture.