This weekend there were eleven mass shootings in the U.S., thirteen if you include Friday. 

As gun violence continues to take an immeasurable toll on cities and communities across America with the physical toll comes a psychological one too. 

For more, KCBS Radio news anchors Melissa Culross and Jason Brooks spoke with Alison Holman, professor of psychological science and nursing at UC Irvine and co-author of a study on the effects of reading and watching coverage of tragic events.