MONTREAL, Quebec, Aug. 3 -- McGill University posted the following news release: * * * Posture can influence your mood and behaviour, McGill study suggests * A person's posture appears to affect their emotions and decision-making ability more than they realize, according to new research from McGill University. In a recent study, participants sitting upright performed better at a risk-taking task and reported more positive feelings than did their peers in the slouching or control groups. Though the effects were modest and observed in a labo more PR