Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The four trial types as a combination of labels (VACCINE and COVID-19) and targets (positive or negative adjectives). The response options are shown at the bottom. Grey boxes and arrows were not presented and indicate which responses are correct in consistent or inconsistent blocks.
