GRAND RAPIDS (WZZM)- Mass murders like the one in Aurora, Colorado do not happen often. But when they do, experts say we shouldn't let them stop us from living our lives.

Psychologist Paul Critelli says, "I think probably some of these people would have a fairly high level of anxiety, or caution in general. These people would probably be more stimulated by tragedy. They might pull-in a little bit and say I'm not going anywhere."

Critelli says there are people that live every day in fear. The most common is the fear of heights. Critelli himself suffered from it.

"And what I had to do is desensitize myself from the queasiness. But I finally was able to do it. I still don't like it, but I am able to deal with it and I am not afraid anymore."

The second most common fear is flying. It's not about crashing, but the fear of panicking in front of people. Same goes for public speaking. It's seems to come easy for some, but not for others. The fourth is fear of darkness. In that case, the chances of someone attacking you is slim to none.

Ron VanTimmeren is with Celebration Cinemas. He says, "We've had thousands of millions of people come through here without incident, and this is so random that we don't expect it to be duplicated or to happen again."

An accident or shooting could happen anywhere, at any time. But, most would agree, it doesn't mean we should stay at home.

"One of the things we've learned after 9-11, was that we can't live our lives in fear. We have to get out of our homes and live our lives and entertain ourselves," VanTimmeren said.

For the latest coverage on the Aurora shooting, head to WZZM 13's theater shooting page.