Publications

2018

Pengcheng Wang, Jonathan Rowe, Wookhee Min, Bradford Mott, and James Lester. High-Fidelity Simulated Players for Interactive Narrative Planning. To appear in Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, Stockholm, Sweden.
Andrew Emerson, Robert Sawyer, Roger Azevedo, and James Lester. Gaze-Enhanced Student Modeling for Game-based Learning. To appear in Proceedings of the Twenty-Sixth ACM Conference on User Modeling, Adaptation and Personalization, Singapore.
Robert Sawyer, Jonathan Rowe, Roger Azevedo, and James Lester. Filtered Time Series Analyses of Student Problem-Solving Behaviors in Game-based Learning. To appear in Proceedings of the Eleventh International Conference on Educational Data Mining, Buffalo, NY.
Michelle Taub, Roger Azevedo, Amanda Bradbury, Garrett Millar, and James Lester. Using Sequence Mining to Reveal the Efficiency in Scientific Reasoning During STEM Learning with a Game-based Learning Environment. Learning and Instruction, 54, 93-103, 2018.

2017

Pengcheng Wang, Jonathan Rowe, Wookhee Min, Bradford Mott, and James Lester. Simulating Player Behavior for Data-Driven Interactive Narrative Personalization. Proceedings of the Thirteenth Annual AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment, pp. 255-261, Snowbird, Utah, 2017.
Michelle Taub, Nicholas Mudrick, Roger Azevedo, Garrett Millar, Jonathan Rowe, and James Lester. Using Multi-Channel Data with Multi-Level Modeling to Assess In-Game Performance During Gameplay with Crystal Island. Computers in Human Behavior, 76, 641-655, 2017.
Pengcheng Wang, Jonathan Rowe, Wookhee Min, Bradford Mott, and James Lester. Interactive Narrative Personalization with Deep Reinforcement Learning. Proceedings of the Twenty-Sixth International Joint Conference on Artificial Intelligence, pp. 3852-3858, Melbourne, Australia, 2017.
Robert Sawyer, Jonathan Rowe, and James Lester. Balancing Learning and Engagement in Game-Based Learning Environments with Multi-Objective Reinforcement Learning. Proceedings of the Eighteenth International Conference on Artificial Intelligence in Education, pp. 323-334, Wuhan, China, 2017.

2016

Wookhee Min, Bradford Mott, Jonathan Rowe, Barry Liu, and James Lester. Player Goal Recognition in Open-World Digital Games with Long Short-Term Memory Networks. Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence, pp. 2590-2596, New York, New York, 2016.
Michelle Taub, Nicholas Mudrick, Roger Azevedo, Garrett Millar, Jonathan Rowe, and James Lester. Using Multi-Level Modeling with Eye-Tracking Data to Predict Metacognitive Monitoring and Self-Regulated Learning with Crystal Island. Proceedings of the Thirteenth International Conference on Intelligent Tutoring Systems, pp. 240-246, Zagreb, Croatia, 2016.

2015

Jonathan Rowe and James Lester. Improving Student Problem Solving in Narrative- Centered Learning Environments: A Modular Reinforcement Learning Framework. Proceedings of the Seventeenth International Conference on Artificial Intelligence in Education, pp. 419-428, Madrid, Spain, 2015.

2014

James Lester, Eleni Lobene, Bradford Mott, and Jonathan Rowe. Serious Games with GIFT: Instructional Strategies, Game Design, and Natural Language in the Generalized Intelligent Framework for Tutoring. Design Recommendations for Adaptive Intelligent Tutoring Systems: Volume 2 – Instructional Management, Sottilare, R., Graesser, A., Hu, X., and Goldberg, B. (Eds.), pp. 205-215, U.S. Army Research Laboratory, Orlando, Florida, 2014.
Wookhee Min, Eun Young Ha, Jonathan Rowe, Bradford Mott, and James Lester. Deep Learning-Based Goal Recognition in Open-Ended Digital Games. Proceedings of the Tenth Annual Conference on Artificial Intelligence and Interactive Digital Entertainment, pp. 37-43, Raleigh, North Carolina, 2014.
Jonathan Rowe, Bradford Mott, and James Lester. Optimizing Player Experience in Interactive Narrative Planning: A Modular Reinforcement Learning Approach. Proceedings of the Tenth International Conference on Artificial Intelligence and Interactive Digital Entertainment, pp. 160-166, Raleigh, North Carolina, 2014.
Alok Baikadi, Jonathan Rowe, Bradford Mott, and James Lester. Generalizability of Goal Recognition Models in Narrative-Centered Learning Environments. Proceedings of the Twenty-Second Conference on User Modeling, Adaptation and Personalization, pp. 278-289, Aalborg, Denmark, 2014.
Wookhee Min, Bradford Mott, Jonathan Rowe, and James Lester. Leveraging Semi-Supervised Learning to Predict Student Problem-Solving Performance in Narrative-Centered Learning Environments. Proceedings of the Twelfth International Conference on Intelligent Tutoring Systems, pp. 664-665, Honolulu, Hawaii, 2014.
Seung Lee, Jonathan Rowe, Bradford Mott, and James Lester. A Supervised Learning Framework for Modeling Director Agent Strategies in Educational Interactive Narrative. IEEE Transactions on Computational Intelligence and AI in Games, 6(2), 203-215, 2014.
Eun Young Ha, Jonathan Rowe, Bradford Mott, and James Lester. Recognizing Player Goals in Open-Ended Digital Games with Markov Logic Networks. Plan, Activity and Intent Recognition: Theory and Practice, Sukthankar, G., Goldman, R., Geib, C., Pynadath, D., Bui, H. H. (Eds.), pp. 289-311, Morgan Kauffman, Waltham, Massachusetts, 2014.
Bradford Mott, Jonathan Rowe, Wookhee Min, Robert Taylor, and James Lester. Flare: An Open Source Toolkit for Creating Expressive User Interfaces for Serious Games. Proceedings of the Ninth International Conference on the Foundations of Digital Games, Fort Lauderdale, Florida, 2014.
Jennifer Sabourin and James Lester. Affect and Engagement in Game-Based Learning Environments. IEEE Transactions on Affective Computing, 5(1), 45-56, 2014.

2013

James Lester, Bradford Mott, Jonathan Rowe, and Jennifer Sabourin. Learner Modeling to Predict Real-Time Affect in Serious Games. Design Recommendations for Adaptive Intelligent Tutoring Systems: Learner Modeling, Sottilare, R., Graesser, A., Hu, X., and Holden, H. (Eds.), pp. 201-210, Army Research Labs, Orlando, Florida, 2013.
James Lester, Eun Young Ha, Seung Lee, Bradford Mott, Jonathan Rowe, and Jennifer Sabourin. Serious Games Get Smart: Intelligent Game-Based Learning Environments. AI Magazine, 34(4), 31-45, 2013.
Jennifer Sabourin, Lucy Shores, Bradford Mott, and James Lester. Understanding and Predicting Student Self-Regulated Learning Strategies in Game-Based Learning Environments. International Journal of Artificial Intelligence in Education, 23(1-4), 94-114, 2013.
Alok Baikadi, Jonathan Rowe, Bradford Mott, and James Lester. Improving Goal Recognition in Interactive Narratives with Models of Narrative Discovery Events. Proceedings of the Sixth Workshop on Intelligent Narrative Technologies, pp. 2-8, Boston, Massachusetts, 2013.
Jonathan Rowe and James Lester. A Modular Reinforcement Learning Framework for Interactive Narrative Planning. Proceedings of the Sixth Workshop on Intelligent Narrative Technologies, pp. 57-63, Boston, Massachusetts, 2013.
Wookhee Min, Jonathan Rowe, Bradford Mott, and James Lester. Personalizing Embedded Assessment Sequences in Narrative-Centered Learning Environments: A Collaborative Filtering Approach. Proceedings of the Sixteenth International Conference on Artificial Intelligence in Education, pp. 369-378, Memphis, Tennessee, 2013.
Jonathan Rowe, Eleni Lobene, Bradford Mott, and James Lester. Embedded Scaffolding for Reading Comprehension in Open-Ended Narrative-Centered Learning Environments. Proceedings of the AIED Workshop on Scaffolding in Open-Ended Learning Environments, pp. 69-72, Memphis, Tennessee, 2013.
Jennifer Sabourin, Bradford Mott, and James Lester. Discovering Behavior Patterns of Self-Regulated Learners in an Inquiry-Based Learning Environment. Proceedings of the Sixteenth International Conference on Artificial Intelligence in Education, pp. 209-218, Memphis, Tennessee, 2013.
Jennifer Sabourin, Bradford Mott, and James Lester. Utilizing Dynamic Bayes Nets to Improve Early Prediction Models of Self-Regulated Learning. Proceedings of the Twenty-First Conference on User Modeling, Adaptation and Personalization, pp. 228-241, Rome, Italy, 2013. (James Chen Best Student Paper Award)
Jennifer Sabourin, Jonathan Rowe, Bradford Mott, and James Lester. Considering Alternate Futures to Classify Off-Task Behavior as Emotion Self-Regulation: A Supervised Learning Approach. Journal of Educational Data Mining, 5(1), 9-38, 2013.
James Lester, Jonathan Rowe, and Bradford Mott. Narrative-Centered Learning Environments: A Story-Centric Approach to Educational Games. Emerging Technologies for the Classroom: A Learning Sciences Perspective, Mouza, C. and Lavigne N. (Eds.), pp. 223-238, Springer US, Manhattan, New York, USA, 2013.
James Lester, Bradford Mott, Jennifer Robison, Jonathan Rowe, and Lucy Shores. Supporting Self-Regulated Science Learning in Narrative-Centered Learning Environments. International Handbook on Metacognition and Learning Technologies, Azevedo, R. & Aleven, V. (Eds.), pp. 471-483, Springer US, Manhattan, New York, USA, 2013.

2012

Alok Baikadi, Jonathan Rowe, Bradford Mott, and James Lester. Toward Narrative Schema-Based Goal Recognition Models for Interactive Narrative Environments. Proceedings of the Fifth Workshop on Intelligent Narrative Technologies, pp. 2-7, Palo Alto, California, 2012.
Eun Young Ha, Jonathan Rowe, Bradford Mott, and James Lester. Goal Recognition with Markov Logic Networks for Player-Adaptive Games. Proceedings of the Twenty-Sixth AAAI Conference on Artificial Intelligence, pp. 2113-2119, Toronto, Canada, 2012.
Jennifer Sabourin, Bradford Mott, and James Lester. Early Prediction of Student Self-Regulation Strategies by Combining Multiple Models. Proceedings of the Fifth International Conference on Educational Data Mining, pp. 156-159, Crete, Greece, 2012.
Seung Lee, Bradford Mott, and James Lester. Real-Time Narrative-Centered Tutorial Planning for Story-Based Learning. Proceedings of the Eleventh International Conference on Intelligent Tutoring Systems, pp. 476-481, Crete, Greece, 2012.
Jennifer Sabourin, Jonathan Rowe, Bradford Mott, and James Lester. Exploring Affect and Inquiry in Open-Ended Game-based Learning Environments. Proceedings of the ITS Workshop on Emotions in Games for Learning, Crete, Greece, 2012.
Jennifer Sabourin, Lucy Shores, Bradford Mott, and James Lester. Predicting Student Self-Regulation Strategies in Game-Based Learning Environments. Proceedings of the Eleventh International Conference on Intelligent Tutoring Systems, pp. 141-150, Crete, Greece, 2012.
Jennifer Sabourin, Jonathan Rowe, Bradford Mott, and James Lester. Exploring Inquiry-based Problem-Solving Strategies in Game-based Learning Environments. Proceedings of the Eleventh International Conference on Intelligent Tutoring Systems, pp. 470-475, Crete, Greece, 2012.
Jonathan Rowe, Bradford Mott, and James Lester. Narrative-Centered Learning Environments. Encyclopedia of the Sciences of Learning, Seel, N. (Eds.), pp. 2423-2426, Springer US, Manhattan, New York, USA, 2012.

2011

Seung Lee, Bradford Mott, and James Lester. Director Agent Intervention Strategies for Interactive Narrative Environments. Proceedings of the Fourth International Conference on Interactive Digital Storytelling, pp. 140-151, Vancouver, Canada, 2011.
Eun Young Ha, Jonathan Rowe, Bradford Mott, and James Lester. Goal Recognition with Markov Logic Networks for Player-Adaptive Games. Proceedings of the Seventh International Conference on Artificial Intelligence and Interactive Digital Entertainment, pp. 32-39, Palo Alto, California, 2011. (Best Paper Award)
Seung Lee, Bradford Mott, and James Lester. Learning Director Agent Strategies: An Inductive Framework for Modeling Director Agents. Proceedings of the Fourth Workshop on Intelligent Narrative Technologies, pp. 37-40, Palo Alto, California, 2011.
Jennifer Sabourin, Bradford Mott, and James Lester. Generalizing Models of Student Affect in Game-Based Learning Environments. Proceedings of the ACII Workshop on Machine Learning for Affective Computing, pp. 588-597, Memphis, Tennessee, 2011.
Jennifer Sabourin, Bradford Mott, and James Lester. Modeling Learner Affect with Theoretically Grounded Dynamic Bayesian Networks. Proceedings of the Fourth International Conference on Affective Computing and Intelligent Interaction, pp. 286-295, Memphis, Tennessee, 2011.
Seung Lee, Bradford Mott, and James Lester. Modeling Narrative-Centered Tutorial Decision Making in Guided Discovery Learning. Proceedings of the Fifteenth International Conference on Artificial Intelligence in Education, pp. 163-170, Auckland, New Zealand, 2011.
Jennifer Sabourin, Jonathan Rowe, Bradford Mott, and James Lester. When Off-Task is On-Task: The Affective Role of Off-Task Behavior in Narrative-Centered Learning Environments. Proceedings of the Fifteenth International Conference on Artificial Intelligence in Education, pp. 534-536, Auckland, New Zealand, 2011.
Lucy Shores, Jonathan Rowe, and James Lester. Early Prediction of Cognitive Tool Use in Narrative-Centered Learning Environments. Proceedings of the Fifteenth International Conference on Artificial Intelligence in Education, pp. 320-327, Auckland, New Zealand, 2011.
James Lester, Scott McQuiggan, and Jennifer Sabourin. Affect Recognition and Expression in Narrative-Centered Learning Environments. New Perspectives on Affect and Learning Technologies, R.A. Calvo & S.K. D'Mello (Eds.), pp. 85-96, Springer, New York, 2011.
Jonathan Rowe, Lucy Shores, Bradford Mott, and James Lester. Integrating Learning, Problem Solving, and Engagement in Narrative-Centered Learning Environments. International Journal of Artificial Intelligence in Education, 21(1-2), 115-133, 2011.
Hiller A. Spires, Jonathan Rowe, Bradford Mott, and James Lester. Problem Solving and Game-Based Learning: Effects of Middle Grade Students' Hypothesis Testing Strategies on Learning Outcomes. Journal of Educational Computing Research, 44(4), 453-472, 2011.

2010

Jonathan Rowe and James Lester. Modeling User Knowledge with Dynamic Bayesian Networks in Interactive Narrative Environments. Proceedings of the Sixth Annual AI and Interactive Digital Entertainment Conference, pp. 57-62, Palo Alto, California, 2010.
Jonathan Rowe, Lucy Shores, Bradford Mott, and James Lester. Individual Differences in Gameplay and Learning: A Narrative-Centered Learning Perspective. Proceedings of the Fifth International Conference on Foundations of Digital Games, pp. 171-178, Monterey, California, 2010.
Seung Lee, Bradford Mott, and James Lester. Investigating Director Agents' Decision Making in Interactive Narrative: A Wizard-of-Oz Study. Proceedings of the Third Workshop on Intelligent Narrative Technologies, Monterey, California, 2010.
Jonathan Rowe, Lucy Shores, Bradford Mott, and James Lester. A Framework for Narrative Adaptation in Interactive Story-Based Learning Environments. Proceedings of the Third Workshop on Intelligent Narrative Technologies, Monterey, California, 2010.
Seung Lee, Bradford Mott, and James Lester. Optimizing Story-Based Learning: An Investigation of Student Narrative Profiles. Proceedings of the Tenth International Conference on Intelligent Tutoring Systems, pp. 155-165, Pittsburgh, Pennsylvania, 2010.
Jennifer Robison, Scott McQuiggan, and James Lester. Developing Empirically Based Student Personality Profiles for Affective Feedback Models. Proceedings of the Tenth International Conference on Intelligent Tutoring Systems, pp. 285-295, Pittsburgh, Pennsylvania, 2010.
Jonathan Rowe, Lucy Shores, Bradford Mott, and James Lester. Integrating Learning and Engagement in Narrative-Centered Learning Environments. Proceedings of the Tenth International Conference on Intelligent Tutoring Systems, pp. 166-177, Pittsburgh, Pennsylvania, 2010.
Scott McQuiggan, Jennifer Robison, and James Lester. Affective Transitions in Narrative-Centered Learning Environments. Educational Technology & Society, 13(1), 40-53, 2010.

2009

Lucy Shores, Jennifer Robison, Jonathan Rowe, Kristin Hoffmann, and James Lester. Narrative-Centered Learning Environments: A Self-Regulated Learning Perspective. Working Notes of the 2009 AAAI Fall Symposium on Cognitive and Metacognitive Educational Systems, pp. 87-92, Arlington, Virginia, 2009.
Jennifer Robison, Jonathan Rowe, Scott McQuiggan, and James Lester. Predicting User Psychological Characteristics from Interactions with Empathetic Virtual Agents. Proceedings of the Ninth International Conference on Intelligent Virtual Agents, pp. 330-336, Amsterdam, The Netherlands, 2009.
Jennifer Robison, Scott McQuiggan, and James Lester. Evaluating the Consequences of Affective Feedback in Intelligent Tutoring Systems. Proceedings of the International Conference on Affective Computing & Intelligent Interaction, pp. 37-42, Amsterdam, The Netherlands, 2009. (Best Student Paper Award)
Scott McQuiggan and James Lester. Modeling Affect Expression and Recognition in an Interactive Learning Environment. International Journal of Learning Technology, 4(3-4), 216-233, 2009.
Jonathan Rowe, Bradford Mott, Scott McQuiggan, Jennifer Robison, Seung Lee, and James Lester. Crystal Island: A Narrative-Centered Learning Environment for Eighth Grade Microbiology. Proceedings of the AIED Workshop on Intelligent Educational Games, pp. 11-20, Brighton, United Kingdom, 2009.
Jonathan Rowe, Scott McQuiggan, Jennifer Robison, and James Lester. Off-Task Behavior in Narrative-Centered Learning Environments. Proceedings of the Fourteenth International Conference on Artificial Intelligence in Education, pp. 99-106, Brighton, U.K., 2009.
Jennifer Robison, Scott McQuiggan, and James Lester. Modeling Task-Based vs. Affect-Based Feedback Behavior in Pedagogical Agents: An Inductive Approach Proceedings of the Fourteenth International Conference on Artificial Intelligence in Education, pp. 25-32, Brighton, U.K., 2009.
Jonathan Rowe, Scott McQuiggan, Jennifer Robison, Darrick Marcey, and James Lester. StoryEval: An Empirical Evaluation Framework for Narrative Generation. Working Notes of the 2009 AAAI Spring Symposium on Intelligent Narrative Technologies II, pp. 103-110, Stanford University, 2009.

2008

Jonathan Rowe, Eun Young Ha, and James Lester. Archetype-Driven Character Dialogue Generation for Interactive Narrative. Proceedings of the Eighth International Conference on Intelligent Virtual Agents, pp. 45-58, Tokyo, Japan, 2008.
Scott McQuiggan, Jonathan Rowe, Sunyoung Lee, and James Lester. Story-Based Learning: The Impact of Narrative on Learning Experiences and Outcomes. Proceedings of the Ninth International Conference on Intelligent Tutoring Systems, pp. 530-539, Montreal, Canada, 2008.
Scott McQuiggan, Julius Goth, Eun Young Ha, Jonathan Rowe, and James Lester. Student Note-Taking in Narrative-Centered Learning Environments: Individual Differences and Learning Outcomes. Proceedings of the Ninth International Conference on Intelligent Tutoring Systems, pp. 510-519, Montreal, Canada, 2008.
Scott McQuiggan, Jennifer Robison, and James Lester. Affective Transitions in Narrative-Centered Learning Environments. Proceedings of the Ninth International Conference on Intelligent Tutoring Systems, pp. 490-499, Montreal, Canada, 2008.
Jennifer Robison, Scott McQuiggan, and James Lester. Differential Affective Experiences in Narrative-Centered Learning Environments. Proceedings of the ITS Workshop on Emotional and Cognitive Issues in Intelligent Tutoring Systems, pp. 91-98, Montreal, Canada, 2008.
Scott McQuiggan, Jennifer Robison, Robert Phillips, and James Lester. Modeling Parallel and Reactive Empathy in Virtual Agents: An Inductive Approach. Proceedings of the Seventh International Joint Conference on Autonomous Agents and Multi-Agent Systems, pp. 167-174, Estoril, Portugal, 2008.
Scott McQuiggan, Jonathan Rowe, and James Lester. The Effects of Empathetic Virtual Characters on Presence in Narrative-Centered Learning Environments. Proceedings of the 2008 SIGCHI Conference on Human Factors in Computing Systems, pp. 1511-1520, Florence, Italy, 2008.
Scott McQuiggan, Bradford Mott, and James Lester. Modeling Self-Efficacy in Intelligent Tutoring Systems: An Inductive Approach. User Modeling and User-Adapted Interaction, 18(1-2), 81-123, 2008.
Scott McQuiggan, Kristin Hoffmann, John Nietfeld, Jennifer Robison, and James Lester. Examining Self-Regulated Learning in a Narrative-Centered Learning Environment: An Inductive Approach to Modeling Metacognitive Monitoring. Proceedings of the ITS Workshop on Meta-Cognition and Self-Regulated Learning in Educational Technologies, pp. 51-60, Montreal, Canada, 2008.

2007

Jonathan Rowe, Scott McQuiggan, and James Lester. Narrative Presence in Intelligent Learning Environments. Working Notes of the AAAI Fall Symposium on Intelligent Narrative Technologies, pp. 126-133, Washington D.C., 2007.
Scott McQuiggan, Sunyoung Lee, and James Lester. Early Prediction of Student Frustration. Proceedings of the Second International Conference on Affective Computing and Intelligent Interactions, pp. 698-709, Lisbon, Portugal, 2007.
Scott McQuiggan and James Lester. Leveraging Affect for Narrative-Centered Guided Discovery Learning Environments. Proceedings of the AIED Workshop on Modeling and Scaffolding Affective Experiences to Impact Learning, pp. 67-74, Marina del Rey, California, 2007.
Jonathan Rowe, Scott McQuiggan, Bradford Mott, and James Lester. Motivation in Narrative-Centered Learning Environments. Proceedings of the AIED Workshop on Narrative Learning Environments, pp. 40-49, Marina del Rey, California, 2007.
Sunyoung Lee, Scott McQuiggan, and James Lester. Inducing User Affect Recognition Models for Task-Oriented Environments. Proceedings of the Eleventh International Conference on User Modeling, pp. 380-384, Corfu, Greece, 2007.
Scott McQuiggan and James Lester. Modeling and Evaluating Empathy in Embodied Companion Agents. International Journal of Human-Computer Studies, 65(4), 348-360, 2007.

2006

Bradford Mott, Sunyoung Lee, and James Lester. Probabilistic Goal Recognition in Interactive Narrative Environments. Proceedings of the Twenty-First National Conference on Artificial Intelligence, pp. 187-192, Boston, Massachusetts, 2006.
Bradford Mott and James Lester. Narrative-Centered Tutorial Planning for Inquiry-Based Learning Environments. Proceedings of the Eighth International Conference on Intelligent Tutoring Systems, pp. 675-684, Jhongli, Taiwan, 2006.
Bradford Mott, Scott McQuiggan, Sunyoung Lee, Seung Lee, and James Lester. Narrative-Centered Environments for Guided Exploratory Learning. Proceedings of the AAMAS Workshop on Agent-Based Systems for Human Learning, pp. 22-28, Hakodate, Japan, 2006.
Bradford Mott and James Lester. U-Director: A Decision-Theoretic Narrative Planning Architecture for Storytelling Environments. Proceedings of the Fifth International Conference on Autonomous Agents and Multiagent Systems, pp. 977-984, Hakodate, Japan, 2006.
If you refer to Crystal Island within a publication or use it for academic research, we encourage you to cite the following article:

Jonathan Rowe, Lucy Shores, Bradford Mott, and James Lester. Integrating Learning, Problem Solving, and Engagement in Narrative-Centered Learning EnvironmentsInternational Journal of Artificial Intelligence in Education, 21(1-2), 115-133, 2011.

Publications on Crystal Island are shown below.

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