The author became the ultimate caretaker of the data from the largest studies as part of his work at Harvard. As perhaps a sign of the times, the data from that study, which once was recorded painstakingly in ledger volumes now sits in his hard drive (one hopes carefully backed up). Simply learning that these studies existed was an eye-opener for me. What treasures!
Though Vaillant happily draws a number of subjective conclusions from the data in the course of this book, he provides substantial information about the objective facts from which his conclusions are drawn. The reader is educated sufficiently to differ with confidence when so moved. The author's periodic confessions of how his views on various study participants evolved of the course of many years is a rather charming demonstration of aging well in its own right. This book is not intended as a scholarly work, however, and the data are not reproduced in full.
I thought the descriptions of individuals who participated in the study, disguised though they might be, and of the author himself, to be the most interesting part of the book. Though they prevent _Aging Well_ from being a simple "Guide To Enjoying Being Old," the participant profiles provide considerable nuance and subtlety as the author ponders the age-old question, how are we to make the best of our lot in life?
As a book intended for popular reading, Vaillant can be expected to make assertions and hopeful noises that his data don't necessarily back up to the same extent as he would for a peer reviewed journal. Generalizability from the studies he has available (which are impressive accomplishments in social science research, even with all of their limitations) is sketchy, especially since he gives most of his time to the Harvard group of white men.
Still, even seeing a limited portrayal of a slice of the population that's gotten young-old (60-69), old-old (70-79), and become the oldest-old (80+) has its benefits. For one thing, it does help lay out a trajectory that those of us who are distant from the older generations can use of to conceive the future of our parents and the present of our grandparents in ways beyond loss.
So if you want a pick=me up and a reminder about many of the strengths and successes of the elderly go ahead and pick this up. Just don't expect it to tell you as much about the disadvantaged elderly.
In general, Vaillant sets his own personal spiritual musings above any recognized religion, dismissing as "immature" anyone who expresses convictions regarding any and all traditional monotheistic religions--especially Christianity. Unfortunately, Vaillant is utterly unaware of how pompous and immature his own posturing appears.