Do women talk more than men? A new study used tiny technology to investigate.

Tinier, cheaper, more capable electronics make it possible to sense , record and measure more and more kinds of things. Some sensors are built into conspicuous, please-notice-what-I’m-doing frames — Google Glass is the current great example of that. But tiny sensors can easily be placed where people won’t notice them.

Researchers at Harvard, MIT, and Northeastern had people each wear tiny sensors.

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