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.
Each panel summarizes responses to one item of the 6-item questionnaire. Circles show scores for basic and premium features for each participant. Squares (sometimes overlapping) depict mean scores for basic and premium features for each item. Brand A is depicted using closed symbols. Brand B is shown using open symbols.
