Griffin Jones, DrPH '22, speaks during a class as his son makes an unexpected appearance April 9, 2021—In her work as a social scientist, Elizabeth Perry, DrPH ’23, uses behavioral research to nudge people towards making better choices, such as saving for retirement or getting vaccinated for COVID-19. But on a recent afternoon, she had a different behavior challenge to contend with—that of a bored kid in search of snacks. As Perry worked on a group project with fellow Harvard T.H. Chan School of Public Health students over Zoom, she tried to focus on the complex statistical problems at ...