It's unclear to me that all the variables have been accounted for in a way that justifies the conclusion that younger workers handle high context switching bett

It's unclear to me that all the variables have been accounted for in a way that justifies the conclusion that younger workers handle high context switching better than older workers. It's entirely possible that younger workers are simply unaware that frequent context switching is very inefficient so they simply uncomplainingly though inefficiently plod forward in such situations. Sure, that makes for less immediate negative feedback to their immediate managers, but it also makes for less long-term value for the company. As a middle-aged employee, I am at least somewhat more aware of the situations in which I am highly productive and the situations in which I am less productive. When the latter types of situations are more prevalent without good reason, I raise those as problems to my manager since he or his managers should be aware of them. In my experience, my managers have appreciated my proactive feedback rather than my silently plodding through inefficient cycles of work. Perhaps there are situations where the latter is preferable, but I have not encountered them.