Constitutes the refereed proceedings of the 7th International Workshop on Intelligent Virtual Agents, IVA 2007, held in Paris, France, September 17-19, 2007. This book includes papers that are organized in topical sections on Rendering and Analysis, Culture and Identity, Behavior Models, Feedback Models, Dialogues, Applications, and Evaluation.

Rendering and Analysis.- Simulation Level of Detail for Virtual Humans.- Towards Natural Gesture Synthesis: Evaluating Gesture Units in a Data-Driven Approach to Gesture Synthesis.- 3D Audiovisual Rendering and Real-Time Interactive Control of Expressivity in a Talking Head.- Semantic Segmentation of Motion Capture Using Laban Movement Analysis.- Culture and Identity.- A Computational Model of Culture-Specific Conversational Behavior.- Ethnic Identity and Engagement in Embodied Conversational Agents.- Neuroticism – A Competitive Advantage (Also) for IVAs?.- Behavior Models.- Emotionally Expressive Head and Body Movement During Gaze Shifts.- Fuzzy Similarity of Facial Expressions of Embodied Agents.- The Behavior Markup Language: Recent Developments and Challenges.- Dynamic Behavior Qualifiers for Conversational Agents.- Feedback Models.- Creating Rapport with Virtual Agents.- Incremental Multimodal Feedback for Conversational Agents.- Searching for Prototypical Facial Feedback Signals.- Fluid Semantic Back-Channel Feedback in Dialogue: Challenges and Progress.- Dialogues.- T2D: Generating Dialogues Between Virtual Agents Automatically from Text.- So Let’s See: Taking and Keeping the Initiative in Collaborative Dialogues.- Applications.- Health Document Explanation by Virtual Agents.- Virtual Patients for Clinical Therapist Skills Training.- Integrating a Virtual Agent into the Real World: The Virtual Anatomy Assistant Ritchie.- Proactive Authoring for Interactive Drama: An Author’s Assistant.- Evaluation.- The Effects of an Embodied Conversational Agent’s Nonverbal Behavior on User’s Evaluation and Behavioral Mimicry.- Spatial Social Behavior in Second Life.- Generating Embodied Descriptions Tailored to User Preferences.- Gaze Models.- Scrutinizing NaturalScenes: Controlling the Gaze of an Embodied Conversational Agent.- Attentive Presentation Agents.- The Rickel Gaze Model: A Window on the Mind of a Virtual Human.- Emotions.- Embodied Creative Agents: A Preliminary Social-Cognitive Framework.- Feel the Difference: A Guide with Attitude!.- It’s All in the Anticipation.- Incorporating Emotion Regulation into Virtual Stories.- Poster Session.- Endowing Emotional Agents with Coping Strategies: From Emotions to Emotional Behaviour.- From IVAs to Comics Generating Comic Strips from Emergent Stories with Autonomous Characters.- Emotional Agents with Team Roles to Support Human Group Training.- Context Awareness in Mobile Relational Agents.- Implicit Training of Virtual Agents.- Human Actors and Virtual Agents Playing Together to Transform Stage Direction Practices.- Towards Characters with a Full Episodic Memory.- Towards Fast Prototyping of IVAs Behavior: Pogamut 2.- Towards a Multicultural ECA Tour Guide System.- Towards the Specification of an ECA with Variants of Gestures.- AI-RPG Toolkit: Towards A Deep Model Implementation for Improvisational Virtual Drama.- Attention Based, Naive Strategies, for Guiding Intelligent Virtual Agents.- Behavioural Reactive Agents for Video Game Opponents with Personalities.- Adapting Hierarchical Social Organisation by Introducing Fear into an Agent Architecture.- Roles of a Talking Head in a Cooperative Human-Robot Dialogue System.- Modeling Imitational Behavior Via Social Comparison Theory.- Social Animation in Complex Environments.- A Script Driven Multimodal Embodied Conversational Agent Based on a Generic Framework.- A Quiz Game Console Based on a Generic Embodied Conversational Agent Framework.- AVSML: An XML-Based Markup Language for Web Information Integration in 3D VirtualSpace.- Simulation Environment for Anticipatory Behaving Agents from the Artificial Life Domain.- Towards an Architecture for Aligned Speech and Gesture Production.- Avatar Puppetry Using Real-Time Audio and Video Analysis.- Double Appraisal for Synthetic Characters.- An Expressive Avatar for Instant Messaging Endowed with Emotional Intelligence.- ALICIA.- Towards a Unified Model of Social and Environment-Directed Agent Gaze Behaviour.- Automatic Generation of Expressive Gaze in Virtual Animated Characters: From Artists Craft to a Behavioral Animation Model.- Analyzing Gaze During Face-to-Face Interaction.- Affect and Metaphor in an ICA: Further Developments.- A Case-Based Approach to Intelligent Virtual Agent’s Interaction Experience Representation.- Modeling Spatiotemporal Uncertainty in Dynamic Virtual Environments.- Industrial Demos.- Avatars Contributions to Commercial Applications with Living ActorTM Technology.- The CereVoice Characterful Speech Synthesiser SDK.- VirtuOz Interactive Agents.- Finger Tracking for Virtual Agents.- Techniques of Dialogue Simulation.