Tuesday 1 April 2014

Graph to show 38 milliseconds difference between predicted and observed slowing in simple reaction times with age


Circles and dotted lines are actually observed reaction times in three longitudinal cohorts aged 16-12, 36-44 and 56-63.

Crosses and solid lines show the predicted slowing of simple reaction times across a lifespan of 16-63 years old.

Shorter reaction times correlate with higher general intelligence (IQ) - so this means that actually observed 63 year olds were (38 milliseconds of sRT) more-intelligent than would be expected if they had aged at the expected rate.

Which probably means that the 56-63 year old cohort were significantly more-intelligent than the 16-24 year old cohort, when they were the same age.


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