My current research interests are in the areas of human-computer interaction and metadata architectures. I am particularly interested in how metadata and human-computer interfaces interact to influence information discovery and use. I am also interested in how knowledge from cognitive and educational psychology can be used to influence the design of human-computer interfaces, especially to complex information across disparate sources. Eventually I would like to expand the notion of usability for information systems to include the extent to which a particular combination of architecture and interface does (or does not) facilitate higher order cognitive synthesis of information on the part of the user.