Both the subtitle of the linked article and the published journal article's main title are: "Success inhibits preschoolers’ ability to establish selective trust

Both the subtitle of the linked article and the published journal article's main title are: "Success inhibits preschoolers’ ability to establish selective trust". The "establish selective trust" phrase is much more accurate than just "trust" -- in fact, the current title on HN in strictly incorrect. The preschoolers don't have problems trusting. Rather, you could argue that they're more trustworthy when they never lose. It's the "selective" part that's important. (That said, this feels a bit pedantic to me, and it seems as if no one is confused by the difference in wording.) The "Let your kids lose:" prefix on the SD headline (and not in the peer reviewed publication) could cut either way -- it might be link bait, but it's also not inconsistent with the researchers' advice.