James Flynn on Cognitive Decline

"There was a wonderful study by the OECD where they gave a test of working memory – what a pity it wasn't a test of analytical ability, but it wasn't – and they divided the countries into those like France, where 80% of people retired between 55-65, and those like Sweden and Switzerland, where 80% were still in work, and the loss on working memory in France for that age was twice as great. Which tells us that, if you kept exercising your brain at work, your working memory held up better."

I am much older than the subjects tested. But I keep working like a dog and blogging daily.  And I enjoy it. Most healthy old people in Israel I know is working.