Archive for December 27th, 2008|Daily archive page

The experience of pain and perceptions of intentionality

According to a new story in the Economist, two psychologists, Kurt Gray and Daniel Wegner of Harvard University, have just published a study in  Psychological Science that indicates our perception of pain may be influenced by whether or not we think it was intentionally inflicted.  Like the famous Milgram experiments (blogged about here), Gray and Wegner’s study involved electric shocks.  When subjects thought that their partner (in actuality a confederate) decided to shock them, they rated the shocks are more painful than equivalent shocks that they were told were administered due to impersonal experimental protocol.

2009 has been delayed

The 2009th year of the common era is going to be delayed and its predecessor is being extended.  For real.  But just by a second.

As reported by MSNBC, the extra second, which is required to keep the time in sync with the Earth’s rotation, was ordered by the International Earth Rotation and Reference Systems Service (yes, that’s a real thing—here’s their website).  Said rotation can vary slightly due to various factors, like the planet’s liquid core sloshing around and the gravitational effects of other Solar System bodies.

Leap seconds are added periodically; the last was inserted into 2005.  Wikipedia has, unsurprisingly, more information on them.