http://news.yahoo.com/s/livescience/20090210/sc_livescience/bodylanguagerevealswealthA flashy handbag or Armani suit can signal a person's wealth, but so can their body language, according to a new study. People of higher socioeconomic status are more rude when conversing with others.
Psychologists Michael Kraus and Dacher Keltner of the University of California, Berkeley, videotaped pairs of undergraduate students who were strangers to one another, during one-on-one interviews. In total, 100 undergraduate students participated.
The researchers then looked for certain gestures that indicate level of interest in the other person during one-minute slices of each conversation.
They found that students whose parents were from higher socioeconomic status (SES) backgrounds engaged in more of what he called "impolite" behaviors, such as grooming, doodling and fidgeting. Lower SES students showed more "I'm interested" gestures, including laughter and raising of the eyebrows
more at link...
So primitive... but still prevalent enough to show up in studies. Sad.