Raffaele Rossi's Reading List

"Greg Mankiw is very good for entry-level type textbooks, whether they’re called ‘introduction’ to macroeconomics or ‘intermediate’ macroeconomics. They all suit, more or less, an entry-level knowledge of economics. Some have more, some have less analytical detail. This one is probably the most general in terms of its title, it’s just called Macroeconomics and, in my opinion, it’s the one that can reach the widest audience. That’s why I chose this one. He’s a great writer. It’s a classic and generation after generation of economists have gone through it. You cannot list five books on economics for undergraduates and not include this book. It would be like listing the five top guitarists from the 1960s and not including Jimi Hendrix. It’s very straightforward. For some people it could be challenging, but if you have an A-level in math—to use the British education system [final year US high-school math]—that would be enough to go through the entire book and more. Even with just a GCSE in math [10th grade in the US], that would be enough. That’s why the audience and the demand for the book is very broad, because it can it give you a very good introductory understanding of what macroeconomics is and how macroeconomists think about the economy, the world and so on, without getting too analytical."

"This is more advanced and it’s a completely different animal because it’s a textbook with more specialized demands and a more specialized audience. The book is, broadly speaking, divided into two. The first part is rather technical. The technical complexity doesn’t come simply from the calculus, which is rather simple, although for this book, it’s definitely better if you have A-level math. I use it for my second-year macroeconomics undergraduate courses. We have two streams in our economics degree, and I teach on the more technical one, the BSc in economics. The book is more technical, not only from a mathematical point of view, but also from a logical point of view. The intuitions are elaborated in detail and very precise and the book requires you to think at a level of abstraction that is far higher than what Mankiw requires. All the concepts that he explains are derived from first principles and, in particular, from pure microeconomic theory. The topics are pretty similar. You could map them, roughly speaking, from one book onto the other. But Williamson is way more technical. Williamson deals more with dynamic problems."

"Romer is very advanced undergraduate level or early postgraduate. If you study macroeconomics at an advanced level, you will come across this book. If you want to have a comprehensive and broad perspective of what macroeconomic theory is today, in the broadest and most concise form, this is the book. He has 13 or 14 chapters. Each chapter is a fundamental section of macroeconomics, starting with economic growth, going on to endogenous growth and the economics of ideas, economics of information, economics of monetary policy, fiscal policy, employment—you name it. It’s the most comprehensive, and it’s accessible. The level of analytical skills that you need is quite advanced, in the sense that now, even with A-level math, you’ll need to go through things step-by-step several times. One of the things students used to tell me is that they need to read the book three or four times before they start grasping the general idea. My general reply to them is that every time I open the book again, I notice an extra detail, an extra formula or an extra logical step or something that I had missed before. And I’ve been studying and teaching this book for 15 years. That’s the interesting thing with Romer. He manages to give an introduction to the state-of-the-art theory in every single aspect of macroeconomics. The book has 14 chapters and each chapter is a research agenda in economics . Which is most active really depends on the year. Some years it’s unemployment, some years it’s fiscal policy, some years it’s monetary policy, but that doesn’t mean that the others are not in fashion. It’s just that sometimes one area might get more attention than the others, which may be related just to the agenda at particular academic journals as much as anything else. But every chapter is representative of a very active field in macroeconomics. One of the great things about the book is that, if you have a 15-week course, you can really go through the entire book. But if you have five weeks, you can just select five chapters. Each chapter is self-contained and can be studied in isolation."

"Yes. It is the state-of-the-art—or at least an introduction to the state-of-the-art—in monetary policy. It’s pure orthodox New Keynesianism . It has a very specific use and therefore it’s not for everybody. It’s not for everybody who enrols in a PhD programme. It’s not for everybody who enrols in a PhD who wants to do macroeconomics. It is for those people who are enrolling in a PhD, who want to do macroeconomics and, in particular, who want to understand deeply how a central bank works. Support Five Books Five Books interviews are expensive to produce. If you're enjoying this interview, please support us by donating a small amount . So, it’s really narrow, but it’s still a fundamental book. I say narrow, but of course, monetary policy is one of the biggest sub-fields in macro. And, especially if you are interested in macroeconomic policy, then monetary policy is one of the two key things you need to have. It’s a classic in central banking and monetary policy. I wouldn’t say that this is a book about unconventional monetary policy. It’s more like a classic book of central banking. They may be mentioned, but I don’t think this is the book to go to if you want to understand unconventional monetary policies. But, in my opinion, in order to approach unconventional monetary policy, you first need to fully understand how a central bank works in a classical sense, when the interest rate is away from the zero lower bound."

"It is a way of recasting any dynamic problem in macroeconomics in a specific analytical way, that is called a recurse. It is the book over which generations of PhD students in macroeconomics have sweated blood. And any good book for PhD students in macroeconomics should be stained with sweat and blood, because it needs to be highly technical. This book is. “Any good book for PhD students in macroeconomics should be stained with sweat and blood” It’s really difficult from a mathematical point of view. Doing the problem sets is like writing papers. Going through each chapter and then the problem set of the chapter is really challenging and it takes a long time. To cut a long story short, it’s probably the most technical and difficult book you can think of if you want to study macroeconomics. But, obviously, it is the one that pushes you at the frontier. If Romer was the introduction to the frontier in a very broad sense, this one really is the frontier, but in a very narrow sense. The book covers a wide range of topics, but all the topics that the book covers can be recast in this particular analytical form that is called ‘recursive’. Yes. And understanding how you can apply those tools in specific contexts and to particular problems. How, for example, if there are missing markets in insurance, and you cannot insure against a state of the world, you can use these recursive methods to find the solution to that."