Over time that "laziness"may have an effect on neurologically based skills . . . I'm not sure. . . . size
"Over time that 'laziness' may have an effect on neurologically based skills"... which is what I think the study is SAYING. . . . AGuest
If the study is saying that, then it's pure 100% speculation . . . which is why I used the word "may" and added "I'm not sure"
An evolutionary change comes from genetic mutations which are "selected" as either advantageous or not by environment. Advantageous mutation is preserved because the advantage increases the likelihood of successful reproduction . . . thus the change becomes established in favour of the original genetic composition.
The only way permanent evolutionary change occurs is through the disappearance of the less successful and the emergence of the advantaged. This is not the same as passing on "habits" or "behaviours" from one generation to the next.
Natural selection by environment is the determining factor . . . not socially inherited traits. Any effect on neurologically based skills will have given the humans then living an advantage in the current environment . . . that's why "devolution" simply can't happen . . . it's a death sentence for the individual weakened by adverse mutation.
The time intervals involved stretch well beyond the technological changes of the last 5000 years.