The best and most recent (last year) evidence based on comparing ancient and modern genomes seems to suggest intelligence was selected very strongly during agricultural revolution (a full SD) and has changed <0.2SD since AD0 [for the populations studied]
It seems that the evolutionary pressure for intelligence wasnt that strong in the last few thousand years compared to selection on many other traits (health and sexual selected traits seem to dominate).
Edit: it would take some effort to dig up this study. Ping me if this is of interest to you.
The best and most recent (last year) evidence based on comparing ancient and modern genomes seems to suggest intelligence was selected very strongly during agricultural revolution (a full SD) and has changed <0.2SD since AD0 [for the populations studied]
It seems that the evolutionary pressure for intelligence wasnt that strong in the last few thousand years compared to selection on many other traits (health and sexual selected traits seem to dominate).
Edit: it would take some effort to dig up this study. Ping me if this is of interest to you.