Squirrel-Hair's kids: he's by no means the main factor in how they turned out

How is it that Don Jr., Eric and Ivanka seem to have grown up to be reasonably together, sharp, successful people?

There's a lengthy, in-depth article in New York magazine about that very subject that I recommend. Executive summary: nannies and grandparents. S-H was as absent as you'd presumed.

H/T: Neo-neocon