A new study suggests that a poor sense of smell may be a marker for psychopathic traits. People with psychopathic tendencies have an impaired sense of smell, which points to inefficient processing in the front part of the brain. These findings by Mehmet Mahmut and Richard Stevenson, from Macquarie University in Australia, are published online in Springers journal Chemosensory Perception.
http://www.criticalmass.uk.com/inde...ve-an-impaired-sense-of-smell-study-suggests/