After facing intensifying pressure from the industry to shore up its measurement offerings, Nielsen has taken the unprecedented step of halting third-party accreditation of its own national TV ratings service.
In a statement released Thursday morning, a Nielsen spokesperson said that it would halt the accreditation that the third-party Media Rating Council normally provides as a check on the firm’s own measurement numbers. The decision, the spokesperson said, was “the best course of action” for the measurement firm to take as it looked to update and streamline its national TV product and other measurement products.

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