GEM allows the user to search for a construct (e.g., anxiety, depression), see a definition of the construct, view its associated theoretical foundation, and download different measures of the construct. Similarly, the user can search for a measure and see attributes of that measure (e.g., definition, target population, author, reliability, validity), including the associated construct.
GEM also allows the user to add new information using Web 2.0 functionality. Based upon a "wiki” platform, users help build the website by adding and editing measures and constructs, and providing feedback as well as ratings. Users can also receive usage statistics about measures to help decide which measure to use in prospective research.