00434nam a2200097Ia 4500080001100000100002200011245004300033260000900076520023000085583002100315  aSerial  aBhargava, Saurabh  aDriving under the (cellular) influence  c2013  aInvestigates the causal link between driver cell phone use and crash rates by exploiting a natural experiment induced by the change in cellular plans - a discontinuity in the marginal price of a phone call at 9pm on weekdays.  c10/7/13kSANDRAW