Statistical models attempt to describe and quantify relationships between variables. In the models presented in this chapter, there is a response variable (sometimes called dependent variable) and at least one predictor variable (sometimes called independent or explanatory variable). When investigating a possible cause-and-effect type of relationship, the response variable is the putative effect and the predictors are the hypothesized causes. Typically, there is a main predictor variable of interest; other predictors in the model are called covariates. Unknown covariates or other independent variables not controlled in an experiment or analysis can affect the dependent or outcome variable and mislead the conclusions made from the inquiry (Bock, Velleman, & De Veaux, 2009). A p value (p) measures the statistical significance of the observed relationship; given the model, p is the probability that a relationship is seen by mere chance. The smaller the p value, the more confident we can be that the pattern seen in the data 2 is not random. In the type of models examined here, the R measures the prop- tion of the variation in the response variable that is explained by the predictors 2 specified in the model; if R is close to 1, then almost all the variation in the response variable has been explained. This measure is also known as the multiple correlation coefficient. Statistical studies can be grouped into two types: experimental and observational.

Borders draw one map of the world; money draws another. A journalist’s riveting account exposes a parallel universe that has become a haven for the rich and powerful. A globe shows the world we think we know: neatly delineated sovereign nations that grant or restrict their citizens’ rights. Beneath, above, and tucked inside their borders, however, another universe has been engineered into existence. It consists of thousands of extraterritorial zones that operate largely autonomously, and increasingly for the benefit of the wealthiest individuals and corporations. Atossa Abrahamian traces the rise of this hidden globe to thirteenth-century Switzerland, where poor cantons marketed their only commodity: bodies, in the form of mercenary fighters. Over time, economists, theorists, statesmen, and consultants evolved ever more sophisticated ways of exporting and exploiting statelessness, in the form of free trade zones, flags of convenience, offshore detention centers, charter cities controlled by foreign corporations, and even into outer space. By mapping this countergeography, which decides who wins and who loses in the new global order—and helping us to see how it might be otherwise—The Hidden Globe fascinates, enrages, and inspires.

As portraits, private diaries, and estate inventories make clear, elite families of the Italian Renaissance were obsessed with fashion, investing as much as forty percent of their fortunes on clothing. In fact, the most elaborate outfits of the period could cost more than a good-sized farm out in the Mugello. Yet despite its prominence in both daily life and the economy, clothing has been largely overlooked in the rich historiography of Renaissance Italy. In Dressing Renaissance Florence, however, Carole Collier Frick provides the first in-depth study of the Renaissance fashion industry, focusing on Florence, a city founded on cloth, a city of wool manufacturers, finishers, and merchants, of silk dyers, brocade weavers, pearl dealers, and goldsmiths. From the artisans who designed and assembled the outfits to the families who amassed fabulous wardrobes, Frick's wide-ranging and innovative interdisciplinary history explores the social and political implications of clothing in Renaissance Italy's most style-conscious city. Frick begins with a detailed account of the industry itself—its organization within the guild structure of the city, the specialized work done by male and female workers of differing social status, the materials used and their sources, and the garments and accessories produced. She then shows how the driving force behind the growth of the industry was the elite families of Florence, who, in order to maintain their social standing and family honor, made continuous purchases of clothing—whether for everyday use or special occasions—for their families and households. And she concludes with an analysis of the clothes themselves: what pieces made up an outfit; how outfits differed for men, women, and children; and what colors, fabrics, and design elements were popular. Further, and perhaps more basically, she asks how we know what we know about Renaissance fashion and looks to both Florence's sumptuary laws, which defined what could be worn on the streets, and the depiction of contemporary clothing in Florentine art for the answer. For Florence's elite, appearance and display were intimately bound up with self-identity. Dressing Renaissance Florence enables us to better understand the social and cultural milieu of Renaissance Italy.