Tim Calkins is clinical professor of marketing at Kellogg School of Management at Northwestern University where he teaches courses including Biomedical Marketing and Marketing Strategy. Apple's Messaging Problem: The Headline Is the Headphone Jack 09.09.16 @ 12:54 PM ET Does a $3M Super Bowl Ad Make Sense in a Recession? 01.12.09 @ 12:00 AM ET Don't Overemphasize ROI as Single Measure of Success 02.04.08 @ 12:00 AM ET
