A study is about to give Madison Avenue a fresh pummeling: McKinsey & Co. is telling a host of major marketers that by 2010, traditional TV advertising will be one-third as effective as it was in 1990.
That shocking statistic, delivered to the company's Fortune 100 clients in a report on media proliferation, assumes a 15% decrease in buying power driving by cost-per-thousand rate increases; a 23% decline in ads viewed due to switching off; a 9% loss of attention to ads due to increased multitasking and a 37% decrease in message impact due to saturation.
"You've also got pronounced changes in consumer behavior while they're consuming media," said Tom French, director at McKinsey. "And ad spending is decreasingly reflecting consumer behavior."
