You are concerned about the effects of texting on driving pe…

You are concerned about the effects of texting on driving performance, and want to design a study to test the response time of drivers while texting and while driving only.   Your plan is to record the number seconds it take for a driver to respond when a leading car hits the brakes. Your research partner wants to divide participants randomly into two groups: one to drive without distraction and one to text and drive simultaneously.  Is this a good idea? Why or why not?