1. Researchers studied the effect of driving while texting on driving mistakes. College students were recruited to participate in the study. Due to risk of actual driving on the road, researchers conducted the research in a lab with a driving simulator. Students were randomly assigned to one of the two groups: (1) “driving without texting” or (2) “driving while texting.” Driving mistakes were recorded by the simulator, which include driving more than 10 miles above or below the speed limit and failing to stay within the lane. What type of research was this study? What was the independent variable in this study? What was the dependent variable in this study?