51�Թ�

Having those L’s blown up for the whole class to dissect is where “The Parent Test” differs from previous versions of similar shows like “Wife Swap” and “Supernanny,” which focused on fixing a family’s problems.

Or when Lunenfeld theorizes about “Wife Swap” and “Supernanny” or — just chuckling to himself or with us? — when he muses that the producers at HGTV, in renovating the original Brady Bunch House, should have read some Baudrillard.

Supernanny Jo Frost returns for a new season with two episodes.

“Supernanny” still goes more deeply into the American household than any other reality show — a remarkable feat of openness in a social media age where mommies and daddies post self-edited, positive spins on their lives, all smiles and no misery.

"Wife Swap" and "Supernanny" are only as detrimental as a viewer finds unscripted conflict to be, and actually, the most recent episodes of each prove that the shows have changed with the times, and for the better.