How can you interview merely - I think in those days it was two or three thousand people - and project this to the entire country. That began to change, actually, the next year, when Gallup ...

QUESTION: How did your late father, George Gallup, Sr., get involved in public ... They weren't supposed to interview people on the street, because there's a tendency when you interview people ...

The "evolutionarily ancient" act of yawning likely serves a few purposes, according to Andrew Gallup, a professor of ... a variety of domains," he said on "CBS Mornings Plus" Friday.