Cellphones -- A Workplace Taboo? (image) University of Southern California Caption These are charts showing how perceptions of rude cellphone behavior break down by age and gender. Credit Courtesy USC Marshall School of Business Usage Restrictions With credit Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.