2010 Efficiency Marketing Norton 
Harvard Business Review
JULY 18, 2014
Off the Bell Curve Pay Attention to Your “Extreme Consumers” Working Knowledge Marketers worry too much about the average consumer and don’t spend enough time thinking about “extreme” customers — those quasi-maniacs who passionately love or hate a brand. Norton of Harvard Business School. Avery and Michael I. And long lines ?
Harvard Business Review
FEBRUARY 7, 2011
Is it possible that the Great Recession of 2008-2010 might have something to do with our coming of age as virtual creatures? Was it the efficiency and convenience of not having to go to the store? Norton & Company, 2011). The researchers then set out to understand what prompted the pathological shoppers' online sprees.
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