Do red lights reduce accidents?

Last week, the Insurance Institute for Highway Safety published findings that red-light-running violations had declined at intersections with the cameras in Arlington, Va, reports a story in today’s Wall Street Journal.

The study is consistent with other studiesshowing that the cameras make intersections safer, said Anne T. McCartt, co-author of the report and senior vice president for research at IIHS, which is funded by the insurance industry.

“But other researchers question the use of violations as a measure of safety. ‘As soon as you hear them talk about violation rates, these people are trying to obfuscate the fact that accidents don’t go down,’ said Declan O’Scanlon, a New Jersey state assemblyman and an opponent of the cameras.imgres-1

“’It is meaningless to study violations,’ Barbara Langland Orban, an associate professor of health policy and management at the University of South Florida, wrote in an email. Continue reading “Do red lights reduce accidents?”

Body Mass Index Reconsidered

We know (or should know) just how subjective body image can be, and the psychic toll it takes on millions.

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Advertising promotes a generalized message that there is something wrong with the way all of us look, with weight factoring in with all sorts of other things like complexion, age, hair, and height–as it zeros in on particular parts of us that need fixing. Today’s Wall Street Journal (of all places) carried an essay on just how wrong the BMI can be, excerpted briefly below:

“Some researchers say that while BMI improved on its predecessors, it fails to distinguish between different kinds of body mass and therefore can mislead about individuals’ health levels — a longstanding criticism of the measure that hasn’t prevented it from becoming the primary tool for grouping people into normal-weight, overweight and obese categories. Continue reading “Body Mass Index Reconsidered”

The boss and his baby

“If you work for a company run by a male chief executive whose wife is about to give birth to a child—particularly his firstborn—you might want to cross your fingers they have a daughter” reports today’s Wall Street Journal.  ” And if you’re a male worker, you might get the short end of the stick no matter the gender or birth order.”

“The gender of a male CEO’s children is significantly linked to the salary of

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his employees, according to new research from Aalborg University economics professor Michael Dahl, University of Maryland Smith School of Business professor Cristian Dezso and Columbia Business School professor David Gaddis Ross. Presented Friday at the annual American Economic Association meeting here, the analysis suggests some explanations for the linkage, but doesn’t draw absolute conclusions. Continue reading “The boss and his baby”