The researchers invoked conscious processing simply by showing
volunteers pictures of faces or houses.
Not exact matches
In the study, 66
volunteers first saw
pictures of 30
faces, each paired with a sentence describing a negative, positive or neutral social behavior.
Comparative psychologist Eric Legge
of the University
of Alberta in Edmonton, Canada, and colleagues started their experiment with 102
volunteers in a real room fitted with couches, tables,
pictures, and other furnishings, as well as a dark corner to the left
of the entrance and a window
facing the outside in the corner opposite the entryway.
So he and colleague Ahmad Hariri divided
volunteers into two groups — one with the «short» variant and one without — and compared (using functional magnetic resonance imaging, which generates snapshots
of the brain in action) how their amygdala responses differed when they were shown
pictures of fearful
faces, a common method for triggering an amygdala response.
When
volunteers were asked to compare
pictures of human
faces, they rated those with more facial contrast as looking younger.
SIR — By having
volunteers pair up
pictures of people's
faces («Hunkier than thou», December 11th) scientists trying to understand the causes
of human mate selection are not doing much better than internet dating.