The study of Canadian air traffic controllers, who can work up to age 65, appears this month in the Journal of Experimental Psychology.
The researchers found that while older air traffic controllers experience normal age-related declines in some cognitive skills, their expertise on the job enables them to overcome these deficits and function on a par with their younger peers.
The issue of mandatory retirement is especially pressing because a large proportion of the nation's air traffic controllers are now retiring, or nearing retirement age. According to a congressional subcommittee hearing on the matter in 2008, most of the FAA's current 14,800 controllers were hired during the mid-1980s, after then-President Ronald Reagan fired more than 11,000 controllers who had gone on strike. Several government reports have warned that the upcoming wave of retirements could undermine the safety of the nation's aviation system.
Kramer has spent decades studying age-related declines in cognitive abilities and the factors that sometimes slow or offset the deficits that normally occur.
The new study compared older and younger controllers with one another and with their age-matched peers who were not air traffic controllers. All of the study subjects performed a battery of cognitive tasks and simulated air traffic control tasks, which varied in difficulty.
On simple cognitive tasks, the older controllers (aged 53 to 64) were similar to the older non-controllers. Compared with their younger peers (aged 20 to 27), the older subjects were slower on simple memory or decision-making tasks that were not directly related to air traffic control. But on the tests that simulated the tasks of an air traffic controller, the older and younger controllers were equally capable. (The older non-controllers had significant deficits, however.)
"Despite the fact that these old controllers are not superpeople in a cognitive sense, they still do really well on complex simulated air traffic control tasks that are representative of what they do every day," Kramer said. "They do well, one would surmise, because they've gained decades of knowledge in their profession that's allowed them to offset the costs of not having quite the memory they used to have, and certainly not being able to respond as quickly as they once could."
The study points to the distinction between "fluid intelligence" and "crystallized intelligence," Kramer said. Fluid intelligence includes memory capacity and speed of recall; crystallized intelligence is the expertise that comes from years of attention and practice.
"Fluid intelligence declines with age, as it did in our controllers," Kramer said. "But despite that, the many years of experience, the many years of building domain-relevant knowledge in their area of expertise allows them to offset or compensate for these losses in fluid intelligence and do the job really well, just as well as the younger ones."
Diana Yates | University of Illinois
Win-win strategies for climate and food security
02.10.2017 | International Institute for Applied Systems Analysis (IIASA)
The personality factor: How to foster the sharing of research data
06.09.2017 | ZBW – Leibniz-Informationszentrum Wirtschaft
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research