>A questionnaire study directed at a selection of employers shows that there are three characteristics that the employers consider to be important and are worried that employees over the age of 40 have begun to lose: the ability to learn new things, being adaptable and flexible and being driven and taking initiative.
Open question - is there any research on to what degree these three worries are true?
Not really an expert in this particular area, but the research I'm aware of kind of suggests if anything the opposite is true, depending on what you mean by "the ability to learn new things."
There's some cognitive decline, but it tends to start after 25 or so, and it's mostly associated with slowed speed per se rather than learning ability. There's also some controversy in that the declines might be associated with serious health conditions, that are associated with age, rather than age per se.
The other things you mention either stay the same or increase with age, which strikes people as kind of counter-intuitive, which speaks to stereotypes people have.
Open question - is there any research on to what degree these three worries are true?