Articles by Lin Wang

Photo of the authorDr. Wang is a research psychologist and the leader of the Human Factors Research Group at the U.S. Census Bureau. His research interest is human performance assessment and statistical methods.

Labeling and Placement of the Logout Button in Mobile Surveys

Abstract As more people use smartphones to complete web surveys, survey designers are beginning to optimize online questionnaires for limited screen displays, determining which design practices and features can carry over to mobile devices. One such feature is a logout button—an action button that allows users to leave the survey, usually saving their information by […] [Read More]

Usability of Access Codes

Abstract Access codes are a series of numbers, letters, or characters provided to a user when there is a level of identification required to gain entry to an online service, such as the claim code for an online gift certificate. The challenge with access codes is that they need to be unique enough that someone […] [Read More]