In a new piece Annie-Murphy Paul describes the new Marshmallow test, trying no to look at your mobile device in class.

The old Marshmallow test:

The new Marshmallow test (and a teacher who reacts…)

From the piece:

“But evidence from psychology, cognitive science, and neuroscience suggests that when students multitask while doing schoolwork, their learning is far spottier and shallower than if the work had their full attention. They understand and remember less, and they have greater difficulty transferring their learning to new contexts. So detrimental is this practice that some researchers are proposing that a new prerequisite for academic and even professional success—the new marshmallow test of self-discipline—is the ability to resist a blinking inbox or a buzzing phone.”