>> author of the big book of parents collisions, michelle borba, says that is why parents need to teach their kid what is do in many different stranger situations. >> you role play it over and over again. you play what if scenarios. as a result it is more likely to seep in. show, don't tell. >> and that's what we planned to do tonight. i'm a mom with two boys, 3 and 8 years old, and i have been teaching my kids about stranger safety since they were toddlers but like so many parents, i wonder if my kids will remember those lessons in a real life situation. i'm so curious, in fact, that later in the hour, i'll be testing my 8-year-old. along with a group of other moms and dads, we will watch our kids as we put them through a variety of tests to see how they will react in risky situations with strangers, actual scenarios convicted child predators have used to target children. >> hey, guys, i'm matt the ice cream man. >> what will we do when a friendly ice cream man makes a tempting offer. >> how would you guys like a free ice cream? >> will any of them climb into a vehicle with a stranger?