Scientists are racing to develop a safe, effective, vaccine for COVID-19 \u2013 but will people be willing to take it when it's available? We already have a flu vaccine, but less than half of Americans get it each year. Gretchen Chapman, PhD, a cognitive psychologist who studies health behavior, discusses why people choose to get vaccinated\u2013or not\u2013and how policymakers can encourage vaccination.\nLearn more about your ad choices. Visit megaphone.fm/adchoices