Two weeks ago, I wrote a bit about what I learned from Cicero about aging. Today I share a bit more, this time from Arthur C. Brooks’ “From Strength to Strength.” I found this book to be rather fascinating. The title tells the tale of the book, commending his readers to pass over from a strength characterizing the first half of life to a strength dominating the second half.
The strength of the first half is marked by the acquisition of “fluid intelligence.” This intelligence is requisite for establishing and expanding a career. The capacities attending this intelligence are as varied as the vocations that occupy us. They include creativity, concentration, and such – skills needed to break ground. He provides a graph noting how these skills develop early in a career and then decline nearly as quickly, with a kind of plateau established by mid-career or so. This accords with the observation that many scientists, for instance, make major breakthroughs early in their career. The curve shifts slight from career to career. So, for instance, mathematicians peak at about 22 years into their career, while poets do so at 15 years. This doesn’t mean that poets and mathematicians are not productive later in their career, but the work is harder and the successes smaller.
The second strength Brooks discusses is that of “crystalized intelligence.” This way of knowing comes with strength for integration and the ability to use acquired knowledge. In contrast to fluid intelligence, which is strong at solving abstract problems, crystallized intelligence is good at application, and is marked by the wisdom that is acquired by experience. The curve for crystalized intelligence starts low and slowly begins to grow at about the time the fluid intelligence curve is starting to descend. Crystallized intelligence stays at a high plateau late into life.
The point Brooks makes in the book is that too often we get caught in careers needing the kind of energy and intelligence of the first curve, and so people too often experience a kind of frustration. He commends us to jump from one curve to the other – in other words, to move into places where your wisdom and capacity for integration can be used.
I must admit I like graphs that demonstrate what seems to reflect my experience. Things that were second nature to me once now take a bit more effort, even while I can now negotiate situations that once were more troublesome with a relative ease. Luckily for me, I am in a career that can utilize both kinds of intelligence.
Of course, not all people have options in career choices, but may find more meaning in the work in churches, mosques, and other volunteer opportunities by moving from curve to curve.