How does your ability to make financial decisions change over time?
One research study suggests that, across the population, financial skill follows a hump-shaped pattern. In our youth, we start with low levels of financial knowledge. Over time, our ability grows through experience. However, as we age, our cognitive faculties begin to decline. Over time, the decline in ability outpaces the growth in experience, and as a result our net ability falls. Hence the idea of a hump-shaped curve: from a low in youth, to a peak in middle age, to a slope downward in our older years.