Our mission is to advance the study of social mood and its impact on social actions. The Socionomist, our monthly subscription publication, helps readers understand and prepare for major changes in social mood. Most economists, historians and sociologists presume that events determine society's mood. But Socionomics hypothesizes the opposite: that social mood determines the character of social events. The events of history --such as investment booms and busts, politics, population, and even peace and war -- are the products of a naturally occurring pattern of social-mood fluctuation. Such events, therefore, are not randomly distributed, as is commonly believed, but are in fact probabilistically predictable. Socionomics also posits that the stock market is the best meter of a society's aggregate mood, that news is irrelevant to social mood, and that financial and economic decision-making are fundamentally different in that financial decisions are motivated by the herding impulse while economic choices are guided by supply and demand. The Socionomist, our monthly research review, is designed to help readers prepare for important social changes that most people never see coming.