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Last week, the highly regarded medical journal, The Lancet, retracted a much debated 1998 study that had linked the measles, mumps and rubella vaccine to autism. The study was retracted after concerns about ethical breaches by one of the study authors. In addition, 10 of the 13 co-authors have disavowed the study's conclusions. "We fully retract this paper from the published record," The Lancet editors said in a statement. But the damage has been done. The paper has fueled fears about the risks of childhood vaccinations and autism, particularly the M.M.R. vaccine, despite numerous studies showing no link.

Try reading a book while doing a crossword puzzle, and that, says author Nicholas Carr, is what you're doing every time you use the Internet. Carr is the author of the Atlantic article Is Google Making Us Stupid? which he has expanded into a book, The Shallows: What the Internet Is Doing to Our Brains. Carr believes that the Internet is a medium based on interruption - and it's changing the way people read and process information. We've come to associate the acquisition of wisdom with deep reading and solitary concentration, and he says there's not much of that to be found online.

"Will you have a better life if you graduate from an elite school? Students and their parents think the answer is yes, and competition for slots at top-ranked (and costly) schools seems higher than ever. Having a big name college on your resume can impress employers, friends and the opposite sex. The Times columnist Gail Collins says this national fixation makes little sense. "We can do a great service to the youth and parents of America by telling them to stop obsessing about choosing a college," she wrote recently in The Conversation blog. "Kids, you do not need to go to a school with a name that impresses your friends. Go to a school you can afford." If enough people took her advice, the spell might be broken. In the meantime, what should sensible and ambitious students keep in mind about where they go to school?"

"Even economists are finally waking up to this fact. A wind of change is now blowing some human spirit back into the ivory towers where economic theory is made. It is becoming increasingly fashionable for economists, especially the younger, more ambitious ones, to borrow insights from psychologists (and sometimes even biologists) to try to explain drug addiction, the working habits of New York taxi-drivers, current sky-high American share prices and other types of behaviour which seem to defy rationality. Alan Greenspan, the chairman of the Federal Reserve, made a bow to this new trend when he wondered about the "irrational exuberance" of American stockmarkets way back in December 1996 (after an initial flutter of concern, investors ignored him). Many economic rationalists still hold true to their faith, and some have fought back by devising rational explanations for the apparent irrationalities studied by the growing school of "behavioural economists". Ironically, orthodox economists have been forced to fight this rearguard action against heretics in their own ranks just as their own approach has begun to be more widely applied in other social sciences such as the study of law and politics. "

"Here's a little ditty that catalogs and musically explains a useful list of cognitive biases uncovered by behavioral psychologists. It was created by Bradley Wray, a high school teacher in Maryland, as a study aid for students preparing for their AP Psychology exam. How are you biased? Let Bradley Wray count the ways."

I think I've linked this one already, but it's good enough to list twice!