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yesterday by Varna
Big Data Is Coming to Take Your Health Insurance - Bloomberg
In the context of a free market, the big data healthcare conundrum is this: The better we get at predicting and treating, say, diabetes, the better private insurance companies will get at charging people for their future diabetes care. The asymptotic limit is a subpopulation of poor, sick people who cannot afford insurance and live off Medicaid, and a bunch of healthy people who are well covered but don’t need insurance. As Republicans have learned in recent weeks, high-risk pools are incredibly expensive.

Obamacare took a step toward addressing the conundrum when it forbade insurance companies to charge more for pre-existing conditions. But that’s not enough, because it doesn’t deal with the oncoming tide of "expected health conditions.”
bigdata 
2 days ago by scritic
Experimental evidence of massive-scale emotional contagion through social networks
Abstract

Emotional states can be transferred to others via emotional contagion, leading people to experience the same emotions without their awareness. Emotional contagion is well established in laboratory experiments, with people transferring positive and negative emotions to others. Data from a large real-world social network, collected over a 20-y period suggests that longer-lasting moods (e.g., depression, happiness) can be transferred through networks [Fowler JH, Christakis NA (2008) BMJ 337:a2338], although the results are controversial. In an experiment with people who use Facebook, we test whether emotional contagion occurs outside of in-person interaction between individuals by reducing the amount of emotional content in the News Feed. When positive expressions were reduced, people produced fewer positive posts and more negative posts; when negative expressions were reduced, the opposite pattern occurred. These results indicate that emotions expressed by others on Facebook influence our own emotions, constituting experimental evidence for massive-scale contagion via social networks. This work also suggests that, in contrast to prevailing assumptions, in-person interaction and nonverbal cues are not strictly necessary for emotional contagion, and that the observation of others’ positive experiences constitutes a positive experience for people.
Adam D. I. Kramera,1,
Jamie E. Guilloryb,2, and
Jeffrey T. Hancockb,c
aCore Data Science Team, Facebook, Inc., Menlo Park, CA 94025; and
Departments of bCommunication and
cInformation Science, Cornell University, Ithaca, NY 14853
Edited by Susan T. Fiske, Princeton University, Princeton, NJ, and approved March 25, 2014 (received for review October 23, 2013)
Facebook  socialmedia  sozialeNetzwerke  bigdata  psychologie  Emotionen  emotionalcontagion 
2 days ago by amprekord
Twitter
2017: Top 100 Influencers and Brands
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3 days ago by cdrago

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