rich families and poor families, basically, following up on that classic study by hart and risley years ago, showing the so-called 30 million word gap. that s kind of become a buzz word. but when we look across these broad groups, from a socioeconomic perspective, in terms of income and education, we find that within richer families, and within poorer families, there s incredible variability, a difference in how much parents engage with their children. it s not the s.e.c. or socioeconomic status is destiny, those differences are there. with the more advantaged families having all those gadgets, a lot of times they re spending time on those rather than interacting with the children. it s not just the poor people it s also rather shocking the statistics that you report. i mean, a child at the age of 3