How pro survey-takers are shaping scientific research

Aired: 2/12/2015 | 0:04:30 | Clip
An online job forum called Mechanical Turk has created a pool of professional survey-takers who complete hundreds of inquiries a week. For academic researchers, it’s cheap, easy to use and the response flood in fast. But how good is the data being collected? Judy Woodruff learns more from the NewsHour’s Jenny Marder.