- key reasons are that declining fluid intelligence is often offset by accumulated knowledge, and reserve fluid capacity can act as a buffer against decline; and
- only a minority of workers are vulnerable: those in jobs that require very high levels of fluid intelligence, and those who experience cognitive impairment.
However, some groups of older workers are vulnerable to cognitive decline. Workers in jobs that require a high degree of fluid intelligence (which can include those who end up shifting careers) or who experience a cognitive impairment are likely to have trouble extending their work lives.Source: Center for Retirement Research at Boston College Brief IB#16-18 (November 2016)
As policymakers consider ways to encourage working longer, they may want to pay close attention to the potential impact of any proposed changes on such workers, as well as the effects on disability and unemployment programs that could see increased demand.