Also, mothers who pointed
a lot during the play sessions, as well as those with better developed language and literacy skills of their own, had children whose vocabulary use grew faster as they got older.
Granted, I also took them outside a
lot during their first few weeks (their bladders were so tiny that they had to relieve themselves after every nap,
play session, and meal), so that must have accelerated the process of getting used to the new sensation of being leashed.