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Archive for the ‘networks’ Category

new ways to measure movements via hyper network sampling

Rory, from the home office in South Bend, sends me links to new social movement research. A major question in social movement research is how you measure contentious politics. A lot of our sources are notoriously incomplete, such as media accounts. Kriage Bayerln, Peter Barwis, Bryant Crubaugh, and Cole Carnesecca use hypernetwork sampling (asking a random sample of people to list their social ties) to attack this issue. From Sociological Methods and Research:

The National Study of Protest Events (NSPE) employed hypernetwork sampling to generate the first-ever nationally representative sample of protest events. Nearly complete information about various event characteristics was collected from participants in 1,037 unique protests across the United States in 2010 to 2011. The first part of this article reviews extant methodologies in protest-event research and discusses how the NSPE overcomes their recognized limitations. Next, we detail how the NSPE was conducted and present descriptive statistics for a number of important event characteristics. The hypernetwork sample is then compared to newspaper reports of protests. As expected, we find many differences in the types of events these sources capture. At the same time, the overall number and magnitude of the differences are likely to be surprising. By contrast, little variation is observed in how protesters and journalists described features of the same events. NSPE data have many potential applications in the field of contentious politics and social movements, and several possibilities for future research are outlined.

Readers in social network analysis and organization studies will recognize the importance of this technique. As long as you can sample people, you can sample social ties and the adjust the sample for repetition. Peter Marsden used this technique to sample organizational networks. In movements research, my hybrids paper used the technique to sample orgs that were involved in movement mobilization. It’s great to see this technique expand to sample large samples of events.See Bayerlin’s research project website for more. Recommended.

50+ chapters of grad skool advice goodness: Grad Skool Rulz ($2!!!!)/From Black Power/Party in the Street 

Written by fabiorojas

October 31, 2016 at 1:34 am

Appetite for Innovation: Creativity & Change at elBulli (To be published by Columbia University Press on July 12, 2016)

How is it possible for an organization to systematically enact changes in the larger system of which it is part? Using Ferran Adria’s iconic restaurant “elBulli” as an example of organizational creativity and radical innovation, Appetite for Innovation examines how Adria’s organization was able to systematically produce breakthroughs of knowledge within its field and, ultimately, to stabilize a new genre or paradigm in cuisine – the often called “experimental,” “molecular,” or “techno-emotional” culinary movement.

Recognized as the most influential restaurant in the world, elBulli has been at the forefront of the revolution that has inspired the gastronomic avant-garde worldwide. With a voracious appetite for innovation, year after year, Adrià and his team have broken through with new ingredients, combinations, culinary concepts and techniques that have transformed our way of understanding food and the development of creativity in haute cuisine.

Appetite for Innovation is an organizational study of the system of innovation behind Adrià’s successful organization. It reveals key mechanisms that explain the organization’s ability to continuously devise, implement and legitimate innovative ideas within its field and beyond. Based on exclusive access to meetings, observations, and interviews with renowned professionals of the contemporary gastronomic field, the book reveals how a culture for change was developed within the organization; how new communities were attracted to the organization’s work and helped to perpetuate its practice, and how the organization and its leader’s charisma and reputation were built and maintained over time. The book draws on examples from other fields, including art, science, music, theatre and literature to explore the research’s potential to inform practices of innovation and creativity in multiple kinds of organizations and industries.

The research for Appetite for Innovation was conducted when Adria’s organization was undergoing its most profound transformation, from a restaurant to a research center for innovation, “elBulli foundation”.  The book, therefore, takes advantage of this unique moment in time to retrace the story of a restaurant that became a legend and to explore underlying factors that led to its reinvention in 2011 into a seemingly unparalleled organizational model.

Appetite for Innovation is primarily intended to reach and be used by academic and professionals from the fields of innovation and organizations studies. It is also directed towards a non-specialist readership interested in the topics of innovation and creativity in general. In order to engage a wider audience and show the fascinating world of chefs and the inner-workings of high-end restaurants, the book is filled with photographs of dishes, creative processes and team’s dynamics within haute cuisine kitchens and culinary labs. It also includes numerous diagrams and graphs that illustrate the practices enacted by the elBulli organization to sustain innovation, and the networks of relationships that it developed over time. Each chapter opens with an iconic recipe created by elBulli as a way of illustrating the book’s central arguments and key turning points that enable the organization to gain a strategic position within its field and become successful.

To find a detailed description of the book please go to: http://cup.columbia.edu/book/appetite-for-innovation/9780231176781

Also, Forbes.com included Appetite for Innovation in its list of 17 books recommended for “creative leaders” to read this summer:  http://www.forbes.com/sites/berlinschoolofcreativeleadership/2016/05/15/17-summer-books-creative-leaders-can-read-at-the-beach/#7ac430985cef

 

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Written by M. Pilar Opazo

June 8, 2016 at 4:46 pm

the risky sex game paper – impact on current research

Yesterday, I described a paper written by Kirby Schroeder and my self on infection networks. Yesterday’s post addresses the professional lessons I learned. Today, I want to talk about the impact of the paper on current work. For a long time, the paper, literally, got zero citations in peer reviewed journals. Then, the citations increased around 2010, with people in economics, health, and biology discussing the paper.

Economics: The main commentary among economists is that this is a model of interaction, which can then be used to assess the impact of policy. For example, a paper in the American Law and Economics Review notes that the paper models risky behavior but does not model the law. Other economists are attracted to our prediction about infection knowledge and epidemic plateaus (once the disease becomes common knowledge, people shift behavior and transmission stalls).

Health: The Archives of Sexual Behavior has an article that discusses our article in the context of trying to expand models of disease transmission. For example, we critique the health belief model for ignoring interaction. We criticize sexual scripting theory for ignoring risk and strategic action.

Biology: Perhaps the most interesting impact of the paper is the impact on mathematical biology. In The Journal of Theoretical Biology, a team of mathematicians use the model to address group formation. In a model derived from our Risky Sex Game model, they show that the population, under certain conditions, will separate into specific groups based on HIV status.

Bottom line: People sure hated the paper when I wrote it, but its children are a joy to behold.

50+ chapters of grad skool advice goodness: Grad Skool Rulz ($2!!!!)/From Black Power/Party in the Street!!

Written by fabiorojas

April 29, 2015 at 12:01 am

the risky sex game paper – professional lessons

My first ever journal publication was an article called “A Game Theoretic Model of Sexually Transmitted Disease Epidemics.” It appeared in the journal Rationality and Society in 2002. As the title suggests, the goal of the paper is to model network diffusion using agents that play games with each other. Specifically, let’s assume people want to have sex with each other. The catch is that some people have HIV (or another disease) and some don’t. Further, let’s assume that people will estimate the probability that the partner has HIV based on the type of sex they offer and the current disease prevalence. In other words, offering unprotected sex in a world without STD’s is interpreted way differently than the same offer in a world where lots of people have infections. In this post, I want to briefly discuss what I learned by writing this paper. Tomorrow, I will talk about the small, but interesting, literature in biology and health economics that has referenced this paper.

Lesson #1: Interdisciplinary work doesn’t have to be garbage. The paper uses ideas from at least three different scholarly areas – game theory/economics; social networks/sociology; and probability theory/epidemiology. Orgtheory readers will be familiar with game theory and networks. But the paper uses a cool idea from probability theory called “pairs at a party model” – to model diffusion, you draw people from a pool and match them. I added these ideas: people can only be paired with people they know (the network) and then to decide if they have intercourse, they play a signalling game (game theory).

Lesson #2: Working with your buddies is amazing. My co-author on the project was Kirby Schroeder, who now works in the private sector. We developed the idea by thinking about his personal experience. Gay men often encounter the signaling problem – say you meet a partner and he offers unprotected sex. What does that suggest? We then joined forces to write the paper. Great experience.

Lesson #3: People can get angry at your research. During conferences and peer review, we experienced great hostility because we relied on the literature showing that sometimes, people don’t tell partners about STD’s and thus put them at risk. One woman, who claimed to be a researcher from Massachusetts General Hospital, literally yelled at me during an ASA session. The paper got rejected from Journal of Sex Research, after an R&R, because one reviewer got very upset and claimed that were defaming gay people and that “you don’t know what love means.” Do any of us, really?

Lesson #4: Long term matters. The paper was published in Rationality and Society and then quickly disappeared. But it had an interesting after life. It got an ASA grad student paper award from the Math Soc section. During the first couple of years on the job, it was the only journal publication on the CV, which saved me from complete embarrassment. In one review of my work, it was the *only* paper that the committee actually liked. Later, a member of the RWJ selection committee said that the paper was the only reason that they invited me for an interview, because it showed a genuine commitment to health research. Even better, starting around 2010, researchers rediscovered the paper and now it is part of a larger literature on sexual risk spanning biology, economics, and health. So even though it didn’t have an immediate impact, a well written paper can pay off in ways you might not expect.

Tomorrow: What people get from the Risky Sex Game paper.

50+ chapters of grad skool advice goodness: Grad Skool Rulz ($2!!!!)/From Black Power/Party in the Street!!

Written by fabiorojas

April 28, 2015 at 12:01 am

sexy orgtheory

Next week, we’ll discuss sex and sociology. Here are the topics:

  • Why sex is important for sociologists to study
  • My experience teaching social science research on sex
  • Lessons from Laumann et al. (1994)
  • Professional lessons from my first article on networks and STD’s
  • The unexpected literature that sprung up from that article

If you want to discuss other topics, mention them in the comments and we’ll work it in.

50+ chapters of grad skool advice goodness: Grad Skool Rulz ($2!!!!)/From Black Power/Party in the Street!!

Written by fabiorojas

April 17, 2015 at 12:05 am

two paths to glory

Everyone wants to know the secrets to academic success. But despite the sizable academic self-help genre, actual evidence on whether scholars who pursue certain strategies are more successful than others is fairly thin on the ground.

Erin Leahey has written about the returns to research specialization, and I know of a couple of papers on the characteristics of highly cited scientists (gated links, sorry). There’s probably more in the voluminous scientometrics literature.

Some of our standard theories in organization theory suggest different answers to this question — and in particular, to the question of what research topic you should pick. (Assuming maximum academic success is your goal and not, say, following your passion.)

A whole line of research following from Ezra Zuckerman’s 1999 article on the penalty to category breaching suggests that not fitting into predefined categories can hurt a product. Audiences, for example, find genre-spanning work less appealing. On the flip side, though, Ron Burt’s work on structural holes would seem to imply that academics who bridge poorly connected networks are in a good position to benefit from their brokerage.

Of course, none of this work (at least the stuff I know) has looked specifically at academic research. But both theories fit plausible narratives of scholarly success.

It makes a lot of sense that people who bridge disconnected research communities would be in a position to bring useful ideas from one into the other, and reap the rewards that result. On the other hand, I can think of several examples of folks who seem to achieve less success than they merit because their work falls outside, or fits awkwardly between, well-defined research communities. A penalty to category-breaching or genre-spanning sounds entirely plausible too.

If I had to guess, I’d suspect that these two patterns may both exist in academia but intersect in fairly complex ways. So the network-broker can benefit from her ability to borrow insights from another discipline, or community. But only if the insights are recognizable enough to her home discipline that others can mentally place those insights in an understandable location within their field — that is, in an existing category.

The question is whether there’s a sweet spot — being just enough of a broker to benefit, without being so radical as to trigger a category-breaching penalty. Or maybe there’s a benefit to brokerage, but only in certain structural holes — ones that don’t cause the category problem. Or maybe there are a couple of mutually exclusive strategies for success.

What do you think? Will academic brokers be hit with an illegitimacy penalty for their category breaching? Or are these in fact orthogonal issues for ambitious academics? Maybe there’s actual research that speaks to this.

(H/T to Tim Bartley for the conversation that spurred these musings.)

Written by epopp

February 9, 2015 at 2:04 pm

Posted in academia, networks

measles, HIV, brendan nyhan, and an obscure paper I wrote in 2002

Vox has a nice interview with Dartmouth political scientist Brendan Nyhan about vaccine skeptics. What can be done to convince them? Brendan does research on political beliefs and has shown that in experimental settings, people don’t like to change beliefs even when confronted with correct information. His experiments show that this is true not only for political beliefs, but also controversial health beliefs like believing in the vaccine-autism link.

But there was an additional section in the interview that I found extremely interesting. Nyhan notes that it is easier to be a vaccine skeptic when you don’t actually see a lot of disease: “… many of the diseases that vaccines prevent today are essentially invisible in the US. Vaccines are a victim of their own success here.” This reminded me of a 2002 paper I wrote on STD/HIV transmission. In a model worked out by Kirby Schroeder and myself about people proposing to have risky sex with each other, we wrote that the model has an unusual prediction. If people are proposing risky sex based on how often their friends are infected, you may get unexpected outbreaks of disease:

In the models we have presented, there is no replacement; the population is stable. If we allow for replacement, then we arrive at a novel prediction: as uninfected individuals the population (through birth, migration, etc.) and HIV+ individuals leave (through illness), the proportion of infected individuals will decrease. Once this proportion falls, prior beliefs about the proportion of infected individuals will fall, and if this new prior belief is low enough , then HIV- negative individuals will switch from protected to unprotected sex. The long-term effect of replacement in our model, then, is an oscillation of infection rates… There is some evidence that oscillations in infection rates do occur… An intriguing avenue for research would be to link these patterns in infection rates to the behavior depicted in our model.

In other words, if your model of the world assumes that people take risk based on the infection rates of their buddies, then it is entirely possible, even predictable, that you will see sudden spikes or outbreaks because people “let their guard down.” For HIV, as more people use condoms and other measures, people may engage in more risky sex because few of their friends are infected. For measles and other childhood infections, people who live in very safe places may feel free to deviate from the standard practices that create that safety in their first place. I don’t know how to make vaccine skeptics change their minds, but I do know that movements like vaccine skepticism are some what predictable and we can prepare for it.

50+ chapters of grad skool advice goodness: Grad Skool Rulz ($2!!!!)/From Black Power/Party in the Street!!

Written by fabiorojas

February 9, 2015 at 12:01 am