I am genuinely curious about how this market research is conducted. Are they testing listeners who are already listeners of the format, or people who are not listeners?
That depends on the type of project and the format and the ratings of a station.
A well established and well-achieving station will research its own listeners to keep them happy. Jf a station targets "25-44" but has some 18-24 and some 45-54, they will look at the median age and the hours spent listening by narrow age groups. Then they will recruit the core, such as 28-40 or something similar. The people recruited will have to listen enough to know all the songs, so "heavy" listeners are recruited
If a station wants to improve ratings, they may recruit by playing several short pods of hooks of the general kind of music... for example, one newer, one older, one an average. To get in the test, you have to "like" at least two of the three. Likely a station would want a majority of their own listeners to solidify the base plus "outsiders" to bring in new cume.
A start-up may recruit based on just the music using sample pods, perhaps not just age based but also style based. But before that, they likely did a "perceptual" to determine the appeal of the format before spending money (likely $25,000 or more) on a music test.
For the alternative format (and Audacy in particular), these changes are certainly not something that a hardcore fan of the format would want.
Depends. The alternative partisans are so fragmented into subgroups that they may target one in particular.
If these changes were effective, I would expect to see other alternative stations following Audacy and making changes as well.
It's not that obvious because in a format that is not nationally uniform, each market will behave differently. Grand Rapids and Mobile will in no way have the same playlists for any kind of rock.
This has not happened. Perhaps there are a few listeners who don't mind the changes, but those who listen for new unique music probably aren't interested. I can understand the need to appeal to a different demographic, but these changes don't seem to be working as intended.
New, unique music means "music I have not heard before". For most demos and listeners over 25, that is generally a very dangerous category.
Personally, I view this current situation as a missed opportunity in the Seattle market. Listeners who would have been a fan of alternative before the recent changes are arguably a demographic worth targeting (tending to have a higher income and more spending power than other listeners).
Most ad buys don't look at incomes and spending. They look at the age and gender and sometimes ethnicity of the heavy consumer for a brand, and buy to reach as many as possible.
And, as I have said before, the alternative partisan is in a fragmented sector of the audience. There are several ways of doing alternative, each will annoy or drive off the partisans of the other subsets.