When pilots are given a nap of just 30 minutes on long haul flights, they experience a 16 percent improvement in their reaction time. Nonnapping pilots experience a 34 per cent decrease over the course of the flight.
does that sentence make sense?
does that sentence make sense?
2. Over the entirety of a long flight, test pilot reaction times initially, then at regular intervals until the end of the flight. Result: Without a nap, final reaction times are 34% slower than initial reaction times.
Yes, it's a little bit of a factoid soup, and citations would have been nice.
"Pilots who nap for 30 minutes on a long haul flight improve their reaction time by an average 16% versus their initial reaction time. Pilots who don't take a nap experience a decline in their reaction times making their reaction to stimulus 34% [?] slower by the end of the flight."
People tend to say a persons "reaction time has decreased" when they mean the time taken to react has increased, reaction time is given as if it's a score rather than a time period.
Of course, as stated, not taking a nap apparently gives a greater improvement, so presumably they didn't actually mean "decrease" and instead meant "increase."
Take 100 pilots. Test them all right before flying. Instruct 50 to nap during the flight. Instruct 50 not to. Compare each individual's response time after the flight to their response time before the flight. Aggregate by group. Perform a t-test (or another appropriate test) asking whether or not the difference (after minus before) is the same in both groups, or if one group performs better.