While In the early sixties, three- and four-year-olds with minimal IQs from very low-money households ended up randomly assigned to both the Substantial/Scope Perry Preschool Software – an educational system including house visits – or no intervention. House visits have been intended to improve parental engagement in the child’s education. http://xn--62you-c95te53f.com/bbs/board.php?bo_table=free&wr_id=2991