From the summary at Full Text Reports
What makes some risks dreadful? We propose that people are particularly sensitive to threats that could kill the number of people that is similar to the size of a typical human social circle. Although there is some variability in reported sizes of social circles, active contact rarely seems to be maintained with more than about 100 people. The loss of this immediate social group may have had survival consequences in the past and still causes great distress to people today. Therefore we hypothesize that risks that threaten a much larger number of people (e.g., 1000) will not be dreaded more than those that threaten to kill “only” the number of people typical for social circles. We found support for this hypothesis in 9 experiments using different risk scenarios, measurements of fear, and samples from different countries. Fear of risks killing 100 people was higher than fear of risks killing 10 people, but there was no difference in fear of risks killing 100 or 1000 people (Experiments 1–4, 7–9). Also in support of the hypothesis, the median number of deaths that would cause maximum level of fear was 100 (Experiments 5 and 6). These results are not a consequence of lack of differentiation between the numbers 100 and 1000 (Experiments 7 and 8), and are different from the phenomenon of “psychophysical numbing” that occurs in the context of altruistic behavior towards members of other communities rather than in the context of threat to one’s own community (Experiment 9). We discuss several possible explanations of these findings. Our results stress the importance of considering social environments when studying people’s understanding of and reactions to risks.
- Fear of threats associated with social circle size (eurekalert.org)
- How many friends do you need? Your brain can manage about 150, anthropologist says. (vancouversun.com)
- Our Strongest Networks Have Weak Ties (ourpangea.wordpress.com)
- How LinkedIn Peers into Your Digital Soul (contentmarketinginstitute.com)
- Reading While Eating for April 9: Social Circles (newsfeed.time.com)
Governments and the nuclear industry have failed to address serious data gaps and untested assumptions guiding exposure limits to Cesium (Cs)-137 released in the Chernobyl accident in 1986 and this year’s incident at Fukushima, says University of Massachusetts Amherst toxicologist Edward Calabrese. It’s time now to move toward adopting more evidence-based risk assessment for the future, he adds.
“It is also critical that the linear, no-threshold (LNT) model and the alternative models, such as the threshold and hormesis models, be objectively assessed so that society can be guided by scientific data and validated models rather than ideological perspectives that stealthily infected the risk assessment process for ionizing radiation and carcinogenic chemicals,” he states. …..
November 22, 2011 Posted by Janice Flahiff | Medical and Health Research News, Public Health | Chernobyl disaster, Fukushima, Ionizing radiation, Linear no-threshold model, Nuclear power, Risk assessment | Leave a Comment
This blog presents a sampling of health and medical news and resources for all. Selected articles and resources will hopefully be of general interest but will also encourage further reading through posted references and other links. Currently I am focusing on public health, basic and applied research and very broadly on disease and healthy lifestyle topics.
Several times a month I will post items on international and global health issues. My Peace Corps Liberia experience (1980-81) has formed me as a global citizen in many ways and has challenged me to think of health and other topics in a more holistic manner. (For those wishing to see pictures of a 2009 Friends of Liberia service trip to this West African country, please visit www.fol.org. My photo album is included).
This blog is a companion site to my Health and Medical News and Resources Web site with…
- Informational sites and guides
- Links to help from others (as health care providers and support groups)
- Interactive tools (as health calculators and apps)
- Select related news sites and blogs
My professional work experience and education includes over 10 years experience as a medical librarian and a Master’s in Library Science. In my most recent position I enjoyed contributing to our library’s blog, performing in depth literature searches, and collaborating with faculty, staff, students, and the general public.
While I will never be be able to keep up with the universe of current health/medical news,
I subscribe to the following to glean entries for this blog
- Medical News Today, a MediLexicon International daily online health news product
- MedLib-L ,a medical librarian discussion list
- Science Daily – Your source for the latest research news
- A Consumer and Patient Health (CAPHIS) discussion list , by a section of the Medical Library Association (MLA)
- MedlinePlus email updates from the US National Institutes of Health
- Public Health Partners from the National Library of Medicine
- US Agency for Healthcare Research and Quality (AHRQ) electronic newsletter with updates on the agency’s efforts to “improve the quality, safety, efficiency, and effectiveness of health care for all Americans”
- Krafty (Medical)Librarian,” a collection of writings from Michelle Kraft on items of interest to medical librarians. She tends to write on technology and medical libraries but she also writes about things in general on librarianship, medicine and health”
- Research Buzz, “news about search engines, digital archives, online museums, databases, and other Internet information collections since 1998″
- Library Journal – Breaking News
- librarian.net by librarian consultant Jessamyn West
- The Cornflower, the blog of the National Network of Libraries of Medicine Greater Midwest Region
- DocuTicker with “abstracts from ‘grey literature’: PDF reports published by government agencies, think tanks, NGOs, research institutes and other public interest groups”
- PubMed New and Noteworthy, updates from the largest indexer of biomedical journals in the world
- Free Government Information, a ”place for initiating dialogue and building consensus among the various players (libraries, government agencies, non-profit organizations, researchers, journalists, etc.) who have a stake in the preservation of and perpetual free access to government information”
- Scout Report, a “weekly publication offering a selection of new and newly discovered Internet resources of interest to researchers and educators”
- Latest from Brookings Institute, independent research reports on social and political issues
- KevinMD.com -”Social Media’s leading physician voice”
- EurekAlert-Medicine and Health
- A New Order for CPR, named CAB (Compression-Airway- Breathing)
- What's inside a first aid kit?
- Experts Question Whether Preventive Drugs Are Value For Money
- Skeptical Scalpel: Robots attack America, but Canada not so much
- American Customer Satisfaction Index (ASCI) includes health care related agencies, institutions, and companies
- TOXMAP: Learn about toxic chemicals used in hydraulic fracturing & Update [Wyoming water wells very likely contaminated by fracking]
- Cochrane Reviews - A Great Source for Sound Medical Evidence
- Do Cell Phones Make Us Less Socially Minded?
- Behind the fetish of vitamin B12 shots
- Atlas of the Human Body from the American Medical Association & Additional Anatomy Links