Here’s a link to an interesting article about research that indicates why texting while driving produces worse performance than talking or using a cell phone while driving. See:

http://www.ergoweb.com/news/detail.cfm?id=2422

For the original article that this research article (Text Messaging During Simulated Driving) is based on, see:

http://hfs.sagepub.com/cgi/rapidpdf/0018720809353319?ijkey=gRQOLrGlYnBfc&keytype=ref&siteid=sphfs

Don’t text and drive!