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Senior Lecturer


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Research interests and activities

Giles trained in psychiatry at Imperial College in London, undertaking five years of clinical work in the Hawke's Bay before accepting a role in the Department of Psychological Medicine. He is a general adult consultant psychiatrist with a sub-specialty in substance misuse psychiatry. His research interests include the clinical understanding of personality disorders, particularly as they relate to psychiatric patients and mental state disorder. He is also interested in the interface between psychiatry and society, particularly the application of coercive practices.

He is a member of the International Society for the Study of Personality Disorders and the Australasian Society for Psychiatric Research. He is one of the systematic reviews editors of the British Journal of Psychiatry and sits on the board of the British Journal of Psychiatry and The Psychiatrist.

At the University he is responsible for the sixth year program in psychological medicine in Wellington. He is an accredited examiner for the RANZCP and works as a consultant psychiatrist for CCDHB in the Regional Personality Disorder Service.


Savage, M. K., Lepping, P., Newton-Howes, G., Arnold, R., Staggs, V. S., Kisely, S., … Noorthoom, E. O. (2024). Comparison of coercive practices in worldwide mental healthcare: Overcoming difficulties resulting from variations in monitoring strategies. BJPsych Open, 10, e26. doi: 10.1192/bjo.2023.613

Buchanan, M., Walker, G., Boden, J. M., Mansoor, Z., & Newton-Howes, G. (2023). Protective factors for psychosocial outcomes following cumulative childhood adversity: Systematic review. BJPsych Open, 9, e197. doi: 10.1192/bjo.2023.561

Lee, R. M., Shoorangiz, R., Foulds, J. A., Almuqbel, M. M., Le Heron, C., Cleland, L., Keenan, R. J., Mulder, R., Porter, R. J., Newton-Howes, G., Douglas, K. M., Butler, A. P. H., Boden, J. M., & Melzer, T. R. (2023). Long-term impacts of cannabis on resting state functional networks: Are there any? In K.-L. Horne (Ed.), Proceedings of the 39th International Australasian Winter Conference on Brain Research (AWCBR). (pp. 57). Retrieved from

MacSorley, P., Gordon, S., Gardiner, T., & Newton-Howes, G. (2023). Awareness of the need for change: A constructivist grounded theory of medical students’ understanding of human rights in mental health. Health & Human Rights, 25(1), 161-169.

Buchanan, M., Newton-Howes, G., McLeod, G., & Boden, J. (2023). Life course development following childhood adversity: Methods and findings from the Christchurch Health and Development Study. Longitudinal & Life Course Studies. Advance online publication. doi: 10.1332/175795921x16783739382061

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