Fluid and crystallized intelligence - Deepstash

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Fluid and crystallized intelligence

  • Fluid intelligence is the ability to reason, analyze, and solve unique problems. It is highest in early adulthood and diminishes in one's 30s and 40s.
  • Crystallized intelligence is the ability to use knowledge gained in the past. It relies on accumulated knowledge, tends to increase through one's 40s, and does not diminish until very late in life.

Careers that rely on fluid intelligence tend to peak early, while those that use more crystallized intelligence peak later. Profound insights tend to come from those in their 30s and early 40s. The best explainers of complicated ideas tend to be in their mid-60s unto well into their 80s.

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MORE IDEAS FROM THE SAME ARTICLE

  • Studies show that most adults' happiness declines through their 30s and 40s, then hit a low in their early 50s.
  • After that, studies show that, in wealthier countries, most people's contentment starts to increase again in their 50s, until about age 70.
  • After 70, ...

Many wealthy people keep on working to increase their wealth far beyond what they could possibly spend. They often do it because they get a sense of self-worth from it. However, focusing on acquisition leads to attachment and vanity, which derails the search for happiness.

Instead of acq...

Acceptance of the natural cadence of our abilities allows the shifting of attention to higher spiritual and life priorities.

  • Jump: Let go when you have reached your peak accomplishment, perhaps before you are completely ready. You don't necessarily have to qui...

Current achievements provide happiness, but the memory of past accomplishments do not appear to produce long-lasting happiness.

The waning of ability in people of high accomplishment is particularly difficult psychologically. Retired athletes struggle profoundly after ...

It is the idea that if you reach professional heights and are deeply invested in being high up, you can suffer greatly when you inevitably decline.

In many professions, we may reject the inevitability of decline before a very old age. But the data are clear that for most ...

There are two kinds of virtues:

  • Résumé virtues. These are professional and geared toward worldly success.
  • Eulogy virtues. These are ethical and spiritual. They are what you want people to talk about at your funeral. "He was kind and deeply ...

Some people have managed their declines well.

When the musical career of Johann Sebastian Bach declined, instead of becoming depressed or discouraged, he chose to redesign his life, moving from composer to instructor. In his later ye...

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MORE LIKE THIS

How many pieces did Bach write in his lifetime?

In his lifetime (65 years), Bach composed an incredible 1128 pieces of music. There are a further 23 works which were lost or unfinished. 

His best-known compositions include:

  • The Well-Tempered Clavier,

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Zeno of Citium

“We have two ears and one mouth, so we should listen more than we say.”

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You Are More Than Your Work

  • Reducing yourself to any single characteristic, whether it be your title or your job performance, is a deeply damaging act.
  • Too many people who work hard and strive for success self-objectify as excellent work machines and tools of performance.
  • Strivers seek professional s...

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