From the toddler development newsletter produced by Northwestern Memorial Hospital: "Research suggests that a child's vocabulary at 4.5 years of age is the single strongest predictor of overall first-grade achievement." And as we all know, "first grade achievement" is a significant predictor of ... uh ... what? SAT scores? Income level? Risk factors for alzheimer's? Holy shit, I'd better get out the flashcards and start cracking the whip on my Nugget.
*my 200th post!