Didn’t already see a topic for this so figure I’d create one.
A GfK representative rang my doorbell this afternoon requesting collection of radio ratings data for my household. While I declined it (couldn’t be bothered), I was quite taken aback that this the the way GfK actually collects ratings as it appeared that they didn’t use a diary system like the Nielsen days, but just stated that they’d verbally ask me for the times / days that I’d listened to radio stations in previous weeks. Was 100% legit as he had a uniform and company ID.
For some reason I would have thought they would have improved the quality / accuracy of their data collection by now, considering it’s 2018 and considering TV ratings have used people meters for almost 20 years now.