A study into the usability and security implications of text and image based challenge questions in the context of online examination. - Ullah, Abrar; Xiao, Hannan; Barker, Trevor (Educ. Inf. Technol., 2019)

A Dynamic Profile Questions Approach to Mitigate Impersonation in Online Examinations. - Ullah, Abrar; Xiao, Hannan; Barker, Trevor (J. Grid Comput., 2019)

A Multi-factor Authentication Method for Security of Online Examinations. - Ullah, Abrar; Xiao, Hannan; Barker, Trevor (2018)

From Healthcare to Human-Computer Interaction: Using Framework Analysis Within Qualitative Inquiry. - Joyce, Ger; Lilley, Mariana; Barker, Trevor; Jefferies, Amanda (2017)

Mobile Application Usability Heuristics: Decoupling Context-of-Use. - Joyce, Ger; Lilley, Mariana; Barker, Trevor; Jefferies, Amanda (2017)

Effectiveness of a Learner-Directed Model for e-Learning. - Lee, Stella; Barker, Trevor; Kumar, Vivekanandan Suresh (J. Educ. Technol. Soc., 2016)

Mobile Application Tutorials: Perception of Usefulness from an HCI Expert Perspective. - Joyce, Ger; Lilley, Mariana; Barker, Trevor; Jefferies, Amanda (2016)

Usability of Activity-Based and Image-Based Challenge Questions in Online Student Authentication. - Ullah, Abrar; Xiao, Hannan; Barker, Trevor (2015)

Smartphone Application Usability Evaluation: The Applicability of Traditional Heuristics. - Joyce, Ger; Lilley, Mariana; Barker, Trevor; Jefferies, Amanda (2015)

Evaluating security and usability of profile based challenge questions authentication in online examinations. - Ullah, Abrar; Xiao, Hannan; Barker, Trevor; Lilley, Mariana (J. Internet Serv. Appl., 2014)

Privacy and usability of image and text based challenge questions authentication in online examination. - Ullah, Abrar; Xiao, Hannan; Lilley, Mariana; Barker, Trevor (2014)

Graphical and text based challenge questions for secure and usable authentication in online examinations. - Ullah, Abrar; Xiao, Hannan; Barker, Trevor; Lilley, Mariana (2014)

Adapting Heuristics for the Mobile Panorama. - Joyce, Ger; Lilley, Mariana; Barker, Trevor; Jefferies, Amanda (2014)

Usability of profile based student authentication and traffic light system in online examinations. - Ullah, Abrar; Xiao, Hannan; Lilley, Mariana; Barker, Trevor (2012)

Learning Preferences and Self-Regulation - Design of a Learner-Directed E-Learning Model. - Lee, Stella; Barker, Trevor; Kumar, Vive (2011)

An Automated Feedback System Based on Adaptive Testing: Extending the Model. - Barker, Trevor (Int. J. Emerg. Technol. Learn., 2010)

Building a Narrative Based Requirements Engineering Mediation Model. - Ma, Nan; Hall, Tracy; Barker, Trevor (2008)

Using Mediation Theory to Build a Requirements Conflict Resolution Model. - Ma, Nan; Hall, Tracy; Barker, Trevor; Zhang, Ming (2008)

Improving the user experience of complex applications: adapting to the user's mental model. - Adisen, Asli; Barker, Trevor; Britton, Carol (2007)

The Generation of Automated Learner Feedback Based on Individual Proficiency Levels. - Lilley, Mariana; Barker, Trevor; Britton, Carol (2005)

Learners' Perceived Level of Difficulty of a Computer-Adaptive Test: A Case Study. - Lilley, Mariana; Barker, Trevor; Britton, Carol (2005)

An empirical study of factors that affect user performance when using UML interaction diagrams. - Swan, Jennifer; Barker, Trevor; Britton, Carol; Kutar, Maria (2005)

The development and evaluation of a software prototype for computer-adaptive testing. - Lilley, Mariana; Barker, Trevor; Britton, Carol (Comput. Educ., 2004)

A Computer-Adaptive Test That Facilitates the Modification of Previously Entered Responses: An Empirical Study. - Lilley, Mariana; Barker, Trevor (2004)

Assessing Usability through Perceptions of Information Scent. - Saward, Guy; Hall, Tracy; Barker, Trevor (2004)

User Preference and Performance with UML Interaction Diagrams. - Swan, Jennifer; Kutar, Maria; Barker, Trevor; Britton, Carol (2004)

Investigating the influence of structure of user performance with UML interaction diagrams. - Kutar, Maria; Britton, Carol; Barker, Trevor; Swan, Jennifer (2003)

The Use of a Co-operative Student Model of Learner Characteristics to Configure a Multimedia Application. - Barker, Trevor; Jones, Sara; Britton, Carol; Messer, David (User Model. User Adapt. Interact., 2002)

A Comparison of Empirical Study and Cognitive Dimensions Analysis in the Evaluation of UML Diagrams. - Kutar, Maria; Britton, Carol; Barker, Trevor (2002)

An Empirical Study of User Preference and Performance with UML Diagrams. - Britton, Carol; Kutar, Maria; Anthony, Sue; Barker, Trevor; Beecham, Sarah; Wilkinson, Vitoria (2002)

Investigation into effective navigation in desktop virtual interfaces. - Haik, Eyal; Barker, Trevor; Sapsford, John; Trainis, Simon A. (2002)

How Group Working Was Used to Provide a Constructive Computer-Based Learning Environment. - Barker, Trevor; Barker, Janet (2001)

Investigation into the Effect of Language on Performance in a Multimedia Food Studies Application. - Barker, Trevor; Jones, Sara; Britton, Carol; Messer, David (1999)