Hello steve w77
"Rubbish"?? well perhaps it is but not for the reasons you give.
I'm sorry but your personal experience goes counter to virtually all studies that have been carried out on age vs reaction times.
To be fair, Clay pigeon shooting is a sport where reaction times are important, but It becomes a skill with a learned response because the process is repetitive and controlled. Basically you know what's going to happen and you can prepare both physically and mentally for it, and its not going to surprise you.
A simple study carried out by a school, asked a mixture of people to undertake a reaction time test. without prior knowledge the test consisted of a hanging metre rule in a remote controlled quick release clamp. The candidate held their hand just below the rule and was instructed to catch the rule when it was released. The rule was released by an unknown person whom the candidate could not see so there was no precognition of the release point.
A sample of 94 people aged from 10 to 99 undertook the test. Only one attempt each was allowed to avoid any skill or learned response in the task developing. The distance the rule dropped before it was caught was recorded.
The results were averaged for each decade of age.
AGE Ave Drop Min Max
10-19 28.5 26.1 31.0
20-29 11.4 4.8 20.3
30-39 13.3 6.2 19.0
40-49 15.4 10.6 20.7
50-59 19.5 14.1 30.9
60-69 22.7 19.7 27.0
70-79 24.4 20.4 28.0
80-89 25.0 21.3 27.5
90-99 27.3 26.1 28.6
Interpreting the results - As the rule was dropping due to gravity it was accelerating. A recorded distance of 20cm did not take twice as long as a recorded distance of 10cm, so the results are stretched out and the differences appear larger than they actually are. The measurement in cm whilst not a linear time measurement it did at least rank the reaction times.
Even allowing for the fact the sample size is relatively small a clear trend displayed:-
There is a rapid improvement in reaction times as candidates moved from childhood to adulthood. The fastest response times occurred in early adulthood, and progressively deteriorated with increasing age.
These results closely mirror other professional studies found on the WWW
This was a simple single response test, and it should not be considered fully indicative of a persons ability to drive.
Driving involves dealing with a complex collection of learned responses such as steering, accelerating, changing gears, braking as you approach a junction etc, and a range of less practised emergency responses to unusual situations as they arise. They are complex because not only do you not know when they are going to happen, but you don't know what is going to happen. You have to respond quickly, but you often have to make choices on how to respond. so driving relies on a combination of reaction and cognitive abilities which can be modified by experience.
Age related experience can also modify a persons driving habits. It is widely recognised that the older you are the more aware you are of potential dangers of driving, so older people tend to drive more defensively and as such avoiding situations that might catch a less experienced driver out. Older drivers also have greater range of avoidance strategies to call on, so when an unforeseen event arises the response of an older drive may be more measured and successful than a younger drivers.
None of this is black and white, end eventually reaction times or other medical conditions may render older drivers a greater risk.