didn't remember having the study done on me.. hrmm.. owell.. multitasking is not that difficult.. its knowing whats more important in the situation if something is going wrong.. knowing your limitations of when you need to stop doing one.. I don't try to weave in and out of traffic while on the phone.. If i call someone.. rarely while driving.. then i have something i need to say or it can wait.. once said i say goodbye and im done.. if someone calls me i say im driving whats up.. or make it quick.. i will pick a lane to stay in.. tell them to hold on if need be driving comes first..