Scarr’s original study was done over 50 years ago on kids who grew up in pre-Civil Rights America. That level of deprivation is, as I’ve said, virtually unseen

Scarr’s original study was done over 50 years ago on kids who grew up in pre-Civil Rights America. That level of deprivation is, as I’ve said, virtually unseen in today’s America. Recent studies usually fail to replicate it on more recent experimental data.