miltenberger. the kids call him dr. ray. >> first?stop and don't touch. >> stop and don't touch. >> reporter: dr. ray talks them through the safety steps- and they repeat the lesson with ease. >> what should you do? >> stop, don't touch, run away. >> where you gonna run to? >> to your parents. >> to your parents, it doesn't matter where they are. >> reporter: now at the university of south florida, with the help of dr. ray and one of his research assistants, the kids are about to be tested. this test is similar to one dr. ray has used in his studies. for luke and nevada it's been only three days since the training session. their mom's outside in the watchmobile. and if they go for it, how do you think you're gonna be feeling? >> scared. terrified probably. >> reporter: she told luke and nevada they were here to fill candy baskets to be donated to a local food bank. the baskets will be donated. >> now we're going to just filling out the eggs with as much candy as we want. >> reporter: but what they don't know is in a room down the hall