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Communication strategies can reduce number of drunk drivers, researcher says

Differing interpretations of the term "designated driver" can drain the safety from even the best of intentions, according to an award-winning paper recently published by Northern Illinois University communication professor Kathleen Valde.Valde's research shows that some college students believe that it is all right for a designated driver to drink as long as he or she drinks less - or more slowly - than the others. Some believe that a suitable designated driver can be allowed to smoke marijuana, as long as he or she does not drink. Others choose a designated driver at the end of the night after determining which friend seems the least impaired.