Breaking news! Nervous people smoke more than other people. More breaking news: they also find it harder to quit. Those may not be the kinds of insights that get the attention of the Nobel committee, but a new study in the journal Addiction shows how even so straightforward an idea may yield lifesaving benefits. Psychologist Megan Piper of the University of Wisconsin-Madison Center for Tobacco Research and Intervention (UW-CTRI) wanted to determine what keeps dead-enders hooked.