Do you often drive back home on your own at dangerous speed after a bout of drinking? You must be drinking alone most of the time. According to a new study those who drink alone are more prone to risky behaviour than those who drink moderately in a group. 'Social interaction in groups can reduce the tendency of individual drinkers to accept risks' said psychologist Tim Hopthrow from University of Kent in Britain in a study. 'Alcohol consumers accepted more risk when deciding alone but the least risk when deciding as a group' he added. 'We think that this is