How to change social norms: the person-to-person approach

Atul Gawande's latest New Yorker article is quite good.  Ostensibly, it's about innovation, but really it's about how to change social norms:  

Besides, neither penalties nor incentives achieve what we’re really after: a system and a culture where X is what people do, day in and day out, even when no one is watching. “You must” rewards mere compliance. Getting to “X is what we do” means establishing X as the norm. And that’s what we want: for skin-to-skin warming, hand washing, and all the other lifesaving practices of childbirth to be, quite simply, the norm.

To create new norms, you have to understand people’s existing norms and barriers to change. You have to understand what’s getting in their way. So what about just working with health-care workers, one by one, to do just that? With the BetterBirth Project, we wondered, in particular, what would happen if we hired a cadre of childbirth-improvement workers to visit birth attendants and hospital leaders, show them why and how to follow a checklist of essential practices, understand their difficulties and objections, and help them practice doing things differently. In essence, we’d give them mentors... 

Reactions that I’ve heard both abroad and at home have been interestingly divided. The most common objection is that, even if it works, this kind of one-on-one, on-site mentoring “isn’t scalable.” But that’s one thing it surely is. If the intervention saves as many mothers and newborns as we’re hoping—about a thousand lives in the course of a year at the target hospitals—then all that need be done is to hire and develop similar cadres of childbirth-improvement workers for other places around the country and potentially the world. To many people, that doesn’t sound like much of a solution. It would require broad mobilization, substantial expense, and perhaps even the development of a new profession. But, to combat the many antisepsis-like problems in the world, that’s exactly what has worked. Think about the creation of anesthesiology: it meant doubling the number of doctors in every operation, and we went ahead and did so. To reduce illiteracy, countries, starting with our own, built schools, trained professional teachers, and made education free and compulsory for all children. To improve farming, governments have sent hundreds of thousands of agriculture extension agents to visit farmers across America and every corner of the world and teach them up-to-date methods for increasing their crop yields. Such programs have been extraordinarily effective. They have cut the global illiteracy rate from one in three adults in 1970 to one in six today, and helped give us a Green Revolution that saved more than a billion people from starvation... 

But technology and incentive programs are not enough. “Diffusion is essentially a social process through which people talking to people spread an innovation,” wrote Everett Rogers, the great scholar of how new ideas are communicated and spread. Mass media can introduce a new idea to people. But, Rogers showed, people follow the lead of other people they know and trust when they decide whether to take it up. Every change requires effort, and the decision to make that effort is a social process. 

There is plenty of interesting detail throughout, including a good discussion of a successful person-to-person social marketing campaign in Bangladesh for improving cholera treatment.  Gawande's theory is basically that person-to-person social marketing is more successful than social marketing campaigns that use traditional marketing methods such as print, radio and television advertisements.  In itself, this is hardly a shock; marketing companies have long been aware of this and are working hard to increase their use of person-to-person marketing via new tools such as social media.  

In any case, my instinct is that, for public health interventions, campaigns that target fewer people, but with deeper interventions, will change social norms more effectively than broader, less personal campaigns.