They were assessed using a scale that assessed compulsive or inappropriate phone use such as checking messages while talking to someone else, as well as passive use such as getting messages while doing other work.
Those with a higher score on the scale were more likely to have a higher body mass index and more body fat. In the second part, 72 participants from the first study were put through an MRI scanner while they were shown a series of images, including some with tempting and fattening foods thrown in. The researchers saw increased brain activity in the part of the brain dealing with temptation when these images were shown.
"Such links are important to establish, given rising obesity rates and the prevalence of multimedia use in much of the modern world," said Richard Lopez, the lead author of the study.
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