Kristjánsson, K. (2019) Flourishing as the Aim of Education: A Neo-Aristotelian View, Abingdon: Routledge.
Kristjánsson, K. (2018) Virtuous Emotions. Oxford: Oxford University Press.
Carr, D., Arthur, J. & Kristjánsson, K. (Eds.) ( 2017) Varieties of Virtue Ethics, London: Palgrave Macmillan UK.
Kristjánsson, K. et al. (2016) Teaching Character and Virtue in Schools. London: Routledge.
Kristjánsson, K. (2015) Aristotelian Character Education. London: Routledge.
Kristjánsson, K. (2013) Virtues and Vices in Positive Psychology: A Philosophical Critique. Cambridge: Cambridge University Press.
Kristjánsson, K. (2010 hb, 2012 pb) The Self and Its Emotions. Cambridge: Cambridge University Press.
Kristjánsson, K. (2007) Aristotle, Emotions, and Education. Aldershot: Ashgate Publishing.
Kristjánsson, K. (2018) Virtue from the Perspective of Psychology in Handbook of Virtue Ethics, ed. N. Snow. Oxford: Oxford University Press
Varghese, J. & Kristjánsson, K. (2018) Experienced UK Nurses and the Missing U-Curve of Virtue-Based Reasoning in Cultivating Moral Character and Virtue in Professional Practice, ed. D. Carr. London: Routledge
Huo, Y. & Kristjánsson, K. (2018) Why Is There Lack of Growth in Character Virtues? An Insight into Business Students across British Business Schools in Cultivating Moral Character and Virtue in Professional Practice, ed. D. Carr. London: Routledge
Kristjánsson, K. (2017) Teachers as Facilitators of Student Flourishing in Positive Education: What Are the Political Implications?” in A. S. Murray, G. Slemp and M. White (eds.) Future Directions in Well-being: Education, Organizations, and Policy, Dordrecht: Springer.
Kristjánsson, K. (2017) An Aristotelian Paradigm of the Virtuous Teacher” in a Chinese translation of K. Wang and E. Campbell (eds.) Professional Ethics and the Moral Work of Teaching: Western Contemporary Research, Fujian, China: Fujian Education Press.
Kristjánsson, K & Gulliford, L. (2017) Five Historic Philosophers Discuss Human Flourishing and Happiness in Positive Psychology: A Speculative Dialogue in Three Acts, in N. Brown, T. Lomas and F. Eiroa Orosa (eds.) The Routledge International Handbook of Critical Positive Psychology, London: Routledge.
Kristjánsson, K (2017) A Tale of Two Default Approaches: Some Old Answers For A New Theory in in W. Sinnott-Armstrong and C. B. Miller, Moral Psychology: Virtue and Character (Vol. 5) A Bradford Book.
Kristjánsson, K (2017) “Foreword: Giving Transcendence and Spirituality Their Due”, in Flourishing in Faith, eds. G. Ambler, M. P. Anstey, T. D. McCall and M. White (Oregon: Cascade Books).
Kristjánsson, K. (2016) The New Synthesis in Moral Psychology versus Aristotelianism: Content and Consequences in Dual-Process Theories in Moral Psychology: Interdisciplinary Approaches to Theoretical, Empirical and Practical Considerations, ed. C. Brand. Wiesbaden: Springer AS.
Kristjánsson, K. (2016) What Are Icelandic Teachers’ Attitudes towards Democracy in Education? (co-authors Ingimar Ólafsson Waage and Amalía Björnsdóttir) in Democracy and Decency: What Has Education Got to Do with It?, ed. P. R. Carr, P. L. Thomas, B. Porfilio and J. Gorlewski. Charlotte, NC: IAP.
Kristjánsson, K. (2018) Is the Virtue of Integrity Redundant in Aristotelian Virtue Ethics?, Apeiron, [Online].
Kristjánsson, K. (2017) 'The Flourishing–Happiness Concordance Thesis: Some Troubling Counterexamples', The Journal of Positive Psychology, [Online], pp. 1-12.
Morgan, B., Gulliford, L., and Kristjánsson, K (2017) A New Approach to Measuring Moral Virtues: The Multi-Component Gratitude Measure Personality and Individual Differences, 107 (1).
Walker, D. I., Thoma, S. J., Jones, C. and Kristjánsson, K. (2017), Adolescent Moral Judgement: A Study of UK Secondary School Pupils. Br Educ Res J, 43: 588–607.
Kristjánsson, K. (2017) Emotions Targeting Moral Exemplarity: Making Sense of the Logical Geography of Admiration, Emulation and Elevation, Theory and Research in Education 15(1): 20–37
Kristjánsson, K. (2017) Recent Work on Flourishing as the Aim of Education: A Critical Review”, British Journal of Educational Studies, 65 (1).
Kristjánsson, K. (2016) Awe: An Aristotelian Analysis of a non-Aristotelian Virtuous Emotion. Philosophia.
Kristjánsson, K. (2016) Recent Work on Flourishing as the Aim of Education: A Critical Review. British Journal of Educational Studies.
Kristjánsson, K. (2016) A Philosophical Critique of Psychological Studies of Emotion: The Example of Jealousy. Philosophical Explorations.
Kristjánsson, K. (2016) Jealousy Revisited: Recent Philosophical Work on a Maligned Emotion. Ethical Theory and Moral Practice, 19 (3).
Kristjánsson, K. (2015) Phronesis as an Ideal in Professional Medical Ethics: Some Preliminary Positionings and Problematics, Theoretical Medicine and Bioethics, 36 (5).
Kristjánsson, K. (2015) Grief: An Aristotelian Justification of an Emotional Virtue, Res Philosophica, 92 (4)
Kristjánsson, K. (2015) An Aristotelian Virtue of Gratitude, Topoi, 34 (2)
Kristjánsson, K., Walker, D. and Roberts, M. (2015) Towards a New Era of Character Education in Theory and in Practice. Educational Review 67 (1).