For the second straight week, the House Special Subcommittee on Investigations poked and prodded at the A. C. Nielsen Co., the colossus of the television rating industry.
Nielsen, which collects 90% of all dollars spent on national radio and television ratings, knew it was the committee's prime target, and its executives came to the hearings armed with a vanload of statistical charts. But the committeemen were not to be diverted by the long-winded, jargonized explanations of the Nielsen modus operandi. "You gentlemen amuse me," California Republican J. Arthur Younger told the Nielsen...