My posts were not even exclusively about WABC, but rather, whether or not the 6+ ratings have any value. I tried to make that case. I'm well aware of the conventional wisdom, but even experts sometimes get it wrong.
First, Arbitron/Nielsen did a disservice when they changed 12+ to 6+ with the advent of the PPM. Most 12 year olds are starting to have some agency. They can go to the store by themselves. They have some allowance, or money from relatives like grandparents, or even some kind of part-time work that puts a little money in their pocket. They can buy a candy bar, or a tee shirt or pair of earrings. But you really can't say that about a kindergartner, or even a first or second grader. They're still dependent on mommy or daddy for just about everything. The 12 y/o can pick what station they want to listen to (though these days it's more likely to be Spotify), while the 6 y/o listens to whatever their parents tune to, radio or not.
But more importantly, not everything about radio involves selling listeners to advertisers. So many on RD focus on the ad sales aspect of the medium. But if you're an NPR-affiliate noncom, your ad sales are nonexistent. You "sell" on-air mentions to underwriters, be they corporations, local businesses or foundations. They want to reach ears, and they mostly don't care whether those ears are in the 25-54 demo or 55+. They care if you're open to learning something about them. For them, cume is a much more meaningful statistic. How many
people in the listening area will hear your blurb? Not, how many 41 year old females with 2.3 kids and a soccer game in the afternoon.
There is analogous analysis for commercial stations, I think. If your station is getting 0.0% of the ears in your market (or even, trying to be fair, the area you put a clean signal into), you are not operating in the public interest, because you're
not broadcasting programming that your market's interested in hearing. Again, not your share of 41 y/o fems (or any other demo metric), but your percentage of
total ears in your listening area. If your cume is approaching zero, you're talking to yourself, and that's not in the PICN.
So while the very low end of
6+ (and to be fair, the very upper end too) may indeed be useless, the basic concept of measuring the totality of your listenership as a function of total available ears in your market is not. Which is where any station's cume, and share of total cume comes in.
So basically we're in agreement.