Books by "John Charles Galton"
5 books found
The Elements of Mental Tests provides an introduction to mental testing and the use of psychological and educational measures. Part I: The Elements of Measurement introduces the types of educational and psychological tests commonly in use, the test data those measures collect, and the types of test items that make up a test. Part II: The Elements of Test Scores introduces the mathematical models that professionals use to represent test-takers' answers to test questions. Part II begins with a review of basic statistics particularly relevant to measurement, including the conversion of test scores to z-scores and the use of correlation coefficients to relate test items and tests to one another. Part II continues with an integrated introduction to both Classical Test Theory and Item Response Theory-the most influential methods for understanding tests in use today. Part III: The Elements of Test Quality examines the standards of good testing including a test's reliability and its precision of measurement, the evaluation of test validity, and the features of a good test administration. Altogether, the book provides a comprehensive foundation for readers who are interested in tests, in testing, and in their use in contemporary life.
After 30 years of research, the author of The History of Correlation organized his notes into a manuscript draft during the lockdown months of the COVID-19 pandemic. Getting it into shape for publication took another few years. It was a labor of love. Readers will enjoy learning in detail how correlation evolved from a completely non-mathematical concept to one today that is virtually always viewed mathematically. This book reports in detail on 19th- and 20th-century English-language publications; it discusses the good and bad of many dozens of 20th-century articles and statistics textbooks in regard to their presentation and explanation of correlation. The final chapter discusses 21st-century trends. Some topics included here have never been discussed in depth by any historian. For example: Was Francis Galton lying in the first sentence of his first paper about correlation? Why did he choose the word "co-relation" rather than "correlation" for his new coefficient? How accurate is the account of the history of correlation found in H. Walker's 1929 classic, Studies in the History of Statistical Method? Have 20th-century textbooks misled students as to how to use the correlation coefficient? Key features of this book: Charts, tables, and quotations (or summaries of them) are provided from about 450 publications. In-depth analyses of those charts, tables, and quotations are included. Correlation-related claims by a few noted historians are shown to be in error. Many funny findings from 30 years of research are highlighted. This book is an enjoyable read that is both serious and (occasionally) humorous. Not only is it aimed at historians of mathematics, but also professors and students of statistics and anyone who has enjoyed books such as Beckmann's A History of Pi or Stigler's The History of Statistics.
How is it that self-identified environmental progressives in America can oppose liberalizing immigration policies? Environmentalism is generally assumed to be a commitment of the political left and restrictionism a commitment of the right. As John Hultgren shows, the reality is significantly more complicated. American environmentalists have supported immigration restrictions since the movement first began in the late 1800s, and anti-immigration arguments continue to attract vocal adherents among contemporary mainstream and radical “greens.” Border Walls Gone Green seeks to explain these seemingly paradoxical commitments by examining what is actually going on in American debates over the environmental impacts of immigration. It makes the case that nature is increasingly being deployed as a form of “walling”—which enables restrictionists to subtly fortify territorial boundaries and identities without having to revert to cultural and racial logics that are unpalatable to the political left. From an environmental point of view, the location of borders makes little sense; the Mexican landscape near most border crossings looks exactly like the landscape on the American side. And the belief that immigrants are somehow using up the nation’s natural resources and thereby accelerating the degradation of the environment simply does not hold up to scrutiny. So, Hultgren finds, the well-intentioned efforts of environmentalists to “sustain” America are also sustaining the idea of the nation-state and in fact serving to reinforce exclusionary forms of political community. How, then, should socially conscious environmentalists proceed? Hultgren demonstrates that close attention to the realities of transnational migration can lead to a different brand of socio-ecological activism—one that could be our only chance to effectively confront the powerful forces producing ecological devastation and social injustice.