>> reporter: after putting both jennifers to the test, the jennifer who talked to herself found the grocery items about a minute quicker than the jennifer who kept her lips sealed. this just goes to show there may be something to talking to yourself. >> talking to yourself still makes you look like a screwball. >> i tell you what the problem is. you don't want to answer yourself in a different voice. >> reporter: this jennifer doesn't care what others think because talking out loud helps her get the job done. >> i get it. i can see how it keeps you focused. you are repeating what you need. you are zeroing in. >> it helps to focus. you know, i think -- i do. i'm guilty of it. if something is heavy on my mind. i talk it out. even if no one is listening. >> we should try that now. where's the script? i can't find it. what's next? >> that's right. this is our facebook question. >> you're focused on the show. here's the facebook question of the day. when you talk to yourself, what do you talk about? >> we'd like to know. let us know any self-contained conversations you had at wnnfans.com. >> that was a really good half