The study included 94 undergraduate students who were provided with M&Ms, cookies, carrots and grapes while they watched 20 minutes of television. One-third of the participants watched a segment of the action movie "The Island" while another third watched the Charlie Rose show, and the final third watched the same segment of "The Island" without sound.
"People who were watching 'The Island' ate almost twice as many snacks -- 98 percent more than those watching the talk show," study co-author Brian Wansink, director of the Cornell Food and Brand Lab, said in the news release.
Participants who watched the action movie also consumed more calories -- 354 calories with sound and 314 without sound -- than those who watched the interviewer Charlie Rose (215 calories).
The study was published Sept. 1 in the journal JAMA: Internal Medicine.