This book is quite technical. In fact, it reads much like a traditional academic paper. I don't write that as a complaint. It's not. It is simply a statement of fact for anyone who might by taking a look at this review in advance of reading the book themselves. It is filled with statistical analysis and is quite heavy on statistics language that might not be overly familiar except to those who have been trained in such areas. In fact, that is why I gave it only 4 stars. It will be an extremely difficult read for anyone not versed in statistical analysis.
Having said that, the book is filled with useful information, especially for those looking to develop a solid foundation in the various influences ("determinants") of economic growth. The author focuses on 3 main areas: (1) economic growth and convergence; (2) the interplay between economic and political development; and (3) inflation and growth. Although the book was published in 1997 it is still a valid tool for understanding these topics in the world today (almost 30 years later). To be fair, given the slow progress of most countries in economic areas, it is still highly applicable. There is much to ponder here from Barro's work and I spent quite a bit of time scribbling my own notes and thoughts in the margins throughout the book. I am certain it will become a reference book for my own continued research efforts in development aid and poverty alleviation.