Dave Lundahl is a numbers guy who understands the power of emotions. Lundahl, founder and CEO of behavioral research firm InsightsNow, started his career as a statistician. Over the course of a couple of decades, his focus has broadened. Today, the work InsightsNow does—much of it related to consumers’ engagement with food and beverage brands—reflects Lundahl’s abiding interest in exploring why people behave the way they do and what emotions drive those behaviors. That in…