The Fourth IASTED International Conference on Human-Computer Interaction (IASTED-HCI 2009) will will be a major forum for international researchers and professionals to present their latest research, results, and ideas in all areas of human-computer interaction. Its aim is to strengthen relations between industry, research laboratories, and universities.

The topics of interest include, but are not limited to:

Analysis, Design, and Evaluation Methods
Artificial Intelligence and Agents
Computer Supported Cooperative Work (CSCW)
Computer-based Learning
Devices and Display Systems, Tools, and Interaction Techniques
Ecological Interfaces
Education about HCI
Formal Methods in HCI
Graphical User Interfaces
Groupware Interfaces
Guidelines and Design Heuristics
Societal Implications of HCI
HCI Case Studies
HCI in Mobile, Ubiquitous, and Pervasive Computing Contexts
HCI Theories, Methods, and Practice
Intelligent Systems
Interaction Design for People with Disabilities
Interaction through Wireless Communication Networks
Interfaces for Restricted Environments
Internalization and Implications of Culture on Design
Non-Verbal Interfaces
Perceptual and Adaptive User Interfaces
Psychological Aspects of HCI
Speech and Natural Language Interfaces
Support for Creativity and Learning
Theoretical Foundations of HCI
Universal Access and Usability
Usability Engineering
Usability Testing
User Interface Development
User Interface Software Tools, Architectures, and Technologies
User Modelling and Adaptation
User Profiling and Individual Differences between Users
User Support Systems
Virtual and Augmented Reality
Visions of HCI in the Future
Visual Programming