Mental speed does not start to slow until people turn 60, four decades later than previously thought, a study has suggested.
Researchers say their analysis of more than a million people challenges previous assumptions that mental speed peaks at age 20.
As humans age, it takes longer to react to changes in the environment or stimuli.
This slowing of response time starts from the age of about 20, gradually continuing to slow as people age.
The new study found that although response times started to slow after 20, this could be because people make more cautious decisions and engage in processes not linked to decision-making at a slower rate, such as taking more time to press a computer key.
However, the mental process of making decisions does not start to slow down until age 60, after which it progressively declines.
Mischa von Krause of Heidelberg University in Germany and colleagues looked at data from more than one million people who took part in an online experiment that measured their reaction times to a mental task.
Participants had to categorise a selection of words and images that flashed up on a screen as belonging to one of two categories, for example good or bad, by pushing the correct key in response.
Despite a widespread belief in age-related slowdowns in mental speed, the findings highlight that, for much of life and during the span of a typical career, this is not likely to be the case.
“Our results indicate that response time slowing begins as early as age 20, but this slowing was attributable to increases in decision caution and to slower non-decisional processes, rather than to differences in mental speed,” said the researchers, writing in Nature Human Behaviour.
“Slowing of mental speed was observed only after approximately age 60.
“Our research thus challenges widespread beliefs about the relationship between age and mental speed.”
The specs
Engine: Long-range single or dual motor with 200kW or 400kW battery
Transmission: Single-speed automatic
Max touring range: 620km / 590km
Price: From Dh250,000 (estimated)
Who's who in Yemen conflict
Houthis: Iran-backed rebels who occupy Sanaa and run unrecognised government
Yemeni government: Exiled government in Aden led by eight-member Presidential Leadership Council
Southern Transitional Council: Faction in Yemeni government that seeks autonomy for the south
Habrish 'rebels': Tribal-backed forces feuding with STC over control of oil in government territory
McIlroy's struggles in 2016/17
European Tour: 6 events, 16 rounds, 5 cuts, 0 wins, 3 top-10s, 4 top-25s, 72,5567 points, ranked 16th
PGA Tour: 8 events, 26 rounds, 6 cuts, 0 wins, 4 top-10s, 5 top-25s, 526 points, ranked 71st
Company%20profile%20
%3Cp%3E%3Cstrong%3EName%3A%20%3C%2Fstrong%3EYodawy%3Cbr%3E%3Cstrong%3EBased%3A%3C%2Fstrong%3E%20Egypt%3Cbr%3E%3Cstrong%3EFounders%3A%20%3C%2Fstrong%3EKarim%20Khashaba%2C%20Sherief%20El-Feky%20and%20Yasser%20AbdelGawad%3Cstrong%3E%3Cbr%3ESector%3A%20%3C%2Fstrong%3EHealthTech%3Cbr%3E%3Cstrong%3ETotal%20funding%3A%20%3C%2Fstrong%3E%2424.5%20million%3Cbr%3E%3Cstrong%3EInvestors%3A%20%3C%2Fstrong%3EAlgebra%20Ventures%2C%20Global%20Ventures%2C%20MEVP%20and%20Delivery%20Hero%20Ventures%2C%20among%20others%3Cstrong%3E%3Cbr%3ENumber%20of%20employees%3A%3C%2Fstrong%3E%20500%3Cbr%3E%3C%2Fp%3E%0A
2025 Fifa Club World Cup groups
Group A: Palmeiras, Porto, Al Ahly, Inter Miami.
Group B: Paris Saint-Germain, Atletico Madrid, Botafogo, Seattle.
Group C: Bayern Munich, Auckland City, Boca Juniors, Benfica.
Group D: Flamengo, ES Tunis, Chelsea, (Leon banned).
Group E: River Plate, Urawa, Monterrey, Inter Milan.
Group F: Fluminense, Borussia Dortmund, Ulsan, Mamelodi Sundowns.
Group G: Manchester City, Wydad, Al Ain, Juventus.
Group H: Real Madrid, Al Hilal, Pachuca, Salzburg.
Scores in brief:
Day 1
New Zealand (1st innings) 153 all out (66.3 overs) - Williamson 63, Nicholls 28, Yasir 3-54, Haris 2-11, Abbas 2-13, Hasan 2-38
Pakistan (1st innings) 59-2 (23 overs)
Real estate tokenisation project
Dubai launched the pilot phase of its real estate tokenisation project last month.
The initiative focuses on converting real estate assets into digital tokens recorded on blockchain technology and helps in streamlining the process of buying, selling and investing, the Dubai Land Department said.
Dubai’s real estate tokenisation market is projected to reach Dh60 billion ($16.33 billion) by 2033, representing 7 per cent of the emirate’s total property transactions, according to the DLD.