That is useful obviously but won't work on everyone and makes parents deal with unnecessary guilt and shame when they are raising let's say a Donald.

To the liars out there don't think there is something wrong with you.

You have your purpose too - Google psychopathy or dark triad in the work place and know that Managers actually use/need you guys too, not just honest Abe.

Basically we still live with a stone age level of understanding of personality traits and their pros and cons.

But if everyone understands there is a diff between a banana tree, a redwood and a cactus. All having different needs and personalities, only then do we get a good looking botanical garden.