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Otago Medical School staff profiles

Professor Richard Porter

PositionProfessor and Head of Department
DepartmentDepartment of Psychological Medicine (Christchurch)
QualificationsMB BS (Newcastle UK) MA (Cantab) DipObst (Otago) MRCPsych
Research summaryPsychological Medicine

Research

Richard Porter’s main research interests are in the treatment of mood disorders. He has a particular interest in clinical trials in mood disorders, service delivery, psychological treatments and electroconvulsive therapy.

He has conducted multiple studies into the neurobiology of mood disorders and particularly the neurobiology of cognitive impairment and is now conducting studies of cognitive remediation in mood disorders. He is a consultant psychiatrist specialising in psychiatric care of adults with intellectual disability and also sees patients with treatment resistant mood disorders for second opinions regarding treatment.

Publications

Douglas, K. M., Groves, S., Porter, R. J., Jordan, J., Wilson, L., Melzer, T. R., … Bell, C. J. (2019). Traumatic imagery following glucocorticoid administration in earthquake-related post-traumatic stress disorder: A preliminary functional magnetic resonance imaging study. Australian & New Zealand Journal of Psychiatry. Advance online publication. doi: 10.1177/0004867419851860

Lacey, C., Manuel, J., Schluter, P. J., Porter, R. J., Pitama, S., & Jamieson, H. A. (2019). Sociodemographic, environmental characteristics and comorbidities of older adults with schizophrenia who access community health service support: A national cross-sectional study. Australian & New Zealand Journal of Psychiatry. Advance online publication. doi: 10.1177/0004867419828480

Averill, I. R. E., Beaglehole, B., Douglas, K. M., Jordan, J., Crowe, M. T., Inder, M., Lacey, C. J., Frampton, C. M., … Porter, R. J. (2019). Activation therapy for the treatment of inpatients with depression: Protocol for a randomised control trial compared to treatment as usual. BMC Psychiatry, 19(1), 52. doi: 10.1186/s12888-019-2038-2

Crowe, M., & Porter, R. (2019). Translating evidence into mental health nursing practice: User-centred design. Journal of Psychiatric & Mental Health Nursing. Advance online publication. doi: 10.1111/jpm.12514

Burdick, K. E., Millett, C. E., del Mar Bonnín, C., Bowie, C., Carvalho, A. F., Eyler, L. T., … Porter, R. J., … Young, A. (2019). The International Consortium Investigating Neurocognition in Bipolar Disorder (ICONIC-BD). Bipolar Disorders. Advance online publication. doi: 10.1111/bdi.12748

Chapter in Book - Research

Gallagher, P., & Porter, R. J. (2004). The neuropsychology of mood disorders. In P. R. Joyce & P. B. Mitchell (Eds.), Mood disorders: Recognition and treatment. (pp. 139-150). Sydney, Australia: The University of New South Wales Press Ltd.

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Journal - Research Article

Douglas, K. M., Groves, S., Porter, R. J., Jordan, J., Wilson, L., Melzer, T. R., … Bell, C. J. (2019). Traumatic imagery following glucocorticoid administration in earthquake-related post-traumatic stress disorder: A preliminary functional magnetic resonance imaging study. Australian & New Zealand Journal of Psychiatry. Advance online publication. doi: 10.1177/0004867419851860

Lacey, C., Manuel, J., Schluter, P. J., Porter, R. J., Pitama, S., & Jamieson, H. A. (2019). Sociodemographic, environmental characteristics and comorbidities of older adults with schizophrenia who access community health service support: A national cross-sectional study. Australian & New Zealand Journal of Psychiatry. Advance online publication. doi: 10.1177/0004867419828480

Carter, J. D., McIntosh, V. V. W., Jordan, J., Porter, R. J., Douglas, K., Frampton, C. M., & Joyce, P. R. (2018). Patient predictors of response to cognitive behaviour therapy and schema therapy for depression. Australian & New Zealand Journal of Psychiatry, 52(9), 887-897. doi: 10.1177/0004867417750756

Petersen, J. Z., Porter, R. J., & Miskowiak, K. W. (2018). Clinical characteristics associated with the discrepancy between subjective and objective cognitive impairment in depression. Journal of Affective Disorders, 246, 763-774. doi: 10.1016/j.jad.2018.12.105

Bell, C. J., Frampton, C. M., Colhoun, H. C., Douglas, K. M., McIntosh, V. V. W., Carter, F. A., Jordan, J., … Porter, R. J. (2018). Earthquake brain: Impairment of spatial memory following long-term earthquake-related stress. Australian & New Zealand Journal of Psychiatry. Advance online publication. doi: 10.1177/0004867418789498

Averill, I. R. E., Crowe, M., Frampton, C. M., Beaglehole, B., Lacey, C. J., Jordan, J., Wilson, L. D., Douglas, K. M., & Porter, R. J. (2018). Clinical response to treatment in inpatients with depression correlates with changes in activity levels and psychomotor speed. Australian & New Zealand Journal of Psychiatry, 52(7), 652-659. doi: 10.1177/0004867417753549

Douglas, K. M., Gallagher, P., Robinson, L. J., Carter, J. D., McIntosh, V. V. W., Frampton, C. M. A., … Porter, R. J. (2018). Prevalence of cognitive impairment in major depression and bipolar disorder. Bipolar Disorders, 20(3), 260-274. doi: 10.1111/bdi.12602

Groves, S. J., Pitcher, T. L., Melzer, T. R., Jordan, J., Carter, J. D., Malhi, G. S., … Porter, R. J. (2018). Brain activation during processing of genuine facial emotion in depression: Preliminary findings. Journal of Affective Disorders, 225, 91-96. doi: 10.1016/j.jad.2017.07.049

Boyce, P., Irwin, L., Morris, G., Hamilton, A., Mulder, R., Malhi, G. S., & Porter, R. J. (2018). Long-acting injectable antipsychotics as maintenance treatments for bipolar disorde: A critical review of the evidence. Bipolar Disorders, 20 (Suppl. 2), 25-36. doi: 10.1111/bdi.12698

Bell, C. J., Colhoun, H. C., Frampton, C. M., Douglas, K. M., McIntosh, V. V. W., Carter, F. A., Jordan, J., Carter, J. D., … Porter, R. J. (2017). Earthquake brain: Altered recognition and misclassification of facial expressions are related to trauma exposure but not posttraumatic stress disorder. Frontiers in Psychiatry, 8, 278. doi: 10.3389/fpsyt.2017.00278

Schluter, P. J., Lacey, C., Porter, R. J., & Jamieson, H. A. (2017). An epidemiological profile of bipolar disorder among older adults with complex needs: A national cross-sectional study. Bipolar Disorders, 19(5), 375-385. doi: 10.1111/bdi.12511

Porter, R. J., Bourke, C., Carter, J. D., Douglas, K. M., McIntosh, V. V. W., Jordan, J., Joyce, P. R., & Frampton, C. M. A. (2016). No change in neuropsychological dysfunction or emotional processing during treatment of major depression with cognitive-behaviour therapy or schema therapy. Psychological Medicine, 46(2), 393-404. doi: 10.1017/S0033291715001907

Mace, J. L., Porter, R. J., Dalrymple-Alford, J. C., Collins, C., & Anderson, T. J. (2016). Acute tryptophan depletion and Lewy body dementias. International Psychogeriatrics, 28(9), 1487-1491. doi: 10.1017/s1041610216000284

Crowe, M., Beaglehole, B., Wells, H. J., & Porter, R. (2015). Non-pharmacological strategies for treatment of inpatient depression. Australian & New Zealand Journal of Psychiatry, 49(3), 215-226. doi: 10.1177/0004867415569799

Inder, M. L., Crowe, M. T., & Porter, R. (2015). Effect of transmeridian travel and jetlag on mood disorders: Evidence and implications. Australian & New Zealand Journal of Psychiatry. doi: 10.1177/0004867415598844

Crowe, M., Inder, M., & Porter, R. (2015). Conducting qualitative research in mental health: Thematic and content analyses. Australian & New Zealand Journal of Psychiatry, 49(7), 616-623. doi: 10.1177/0004867415582053

Porter, R. J., Malhi, G. S., & Gallagher, P. (2015). The neurocognitive profile of mood disorders: A review of the evidence and methodological issues. Bipolar Disorders, 17 (Suppl. 2), 21-40. doi: 10.1111/bdi.12342

Gallagher, P., Nilsson, J., Finkelmeyer, A., Goshawk, M., Macritchie, K. A., Lloyd, A. J., … Porter, R. J., … Watson, S. (2015). Neurocognitive intra-individual variability in mood disorders: Effects on attentional response time distributions. Psychological Medicine, 45(14), 2985-2997. doi: 10.1017/S0033291715000926

Groves, S. J., Porter, R. J., Jordan, J., Knight, R., Carter, J. D., McIntosh, V. V. W., Fernando, K., Frampton, C. M. A., Mulder, R. T., Lacey, C., & Joyce, P. R. (2015). Changes in neuropsychological function after treatment with metacognitive therapy or cognitive behavior therapy for depression. Depression & Anxiety, 32(6), 437-444. doi: 10.1002/da.22341

Wadsworth, P., Blackburne, H., Dixon, L., Dobbs, B., Eglinton, T., Ing, A., Mulder, R., Porter, R. J., Wakeman, C., & Frizelle, F. A. (2015). Does bowel preparation for colonoscopy affect cognitive function? Medicine, 94(44), e1823. doi: 10.1097/md.0000000000001823

Vierck, E., Porter, R. J., Spittlehouse, J. K., & Joyce, P. R. (2015). Evaluation of the Consonant Vowel Consonant (CVC) test as an assessment and screening instrument for mild cognitive impairment. International Journal of Psychological Studies, 7(4), 119-129. doi: 10.5539/ijps.v7n4p119

Malhi, G. S., Byrow, Y., Fritz, K., Das, P., Baune, B. T., Porter, R. J., & Outherd, T. (2015). Mood disorders: Neurocognitive models. Bipolar Disorders, 17(Suppl. 2), 3-20. doi: 10.1111/bdi.12353

Vierck, E., Porter, R. J., & Joyce, P. R. (2015). Facial recognition deficits as a potential endophenotype in bipolar disorder. Psychiatry Research, 250(1), 102-107. doi: 10.1016/j.psychres.2015.08.033

Crowe, M., & Porter, R. (2014). Inpatient treatment for mania: A review and rationale for adjunctive interventions. Australian & New Zealand Journal of Psychiatry, 48(8), 716-721. doi: 10.1177/0004867414540754

Jordan, J., Carter, J. D., McIntosh, V. V. W., Fernando, K., Frampton, C. M. A., Porter, R. J., Mulder, R. T., Lacey, C., & Joyce, P. R. (2014). Metacognitive therapy versus cognitive behavioural therapy for depression: A randomized pilot study. Australian & New Zealand Journal of Psychiatry, 48(10), 932-943. doi: 10.1177/0004867414533015

Porter, R. J., Douglas, K., Jordan, J., Bowie, C. R., Roiser, J., & Malhi, G. S. (2014). Psychological treatments for cognitive dysfunction in major depressive disorder: Current evidence and perspectives. CNS & Neurological Disorders: Drug Targets, 13(10), 1677-1692. doi: 10.2174/1871527313666141130223248

Watson, S., Gallagher, P., Dougall, D., Porter, R., Moncrieff, J., Ferrier, I. N., & Young, A. H. (2014). Childhood trauma in bipolar disorder. Australian & New Zealand Journal of Psychiatry, 48(6), 564-570. doi: 10.1177/0004867413516681

Douglas, K. M., Porter, R. J., Knight, R. G., & Alsop, B. (2013). The dynamics of word retrieval in major depression. Australian & New Zealand Journal of Psychiatry, 47, 276-283. doi: 10.1177/0004867412465124

Bell, C., Bhikha, S., Colhoun, H., Carter, F., Frampton, C., & Porter, R. (2013). The response to sulpiride in social anxiety disorder: D2 receptor function. Journal of Psychopharmacology, 27(2), 146-151. doi: 10.1177/0269881112450778

Porter, R. J., Bowie, C. R., Jordan, J., & Malhi, G. S. (2013). Cognitive remediation as a treatment for major depression: A rationale, review of evidence and recommendations for future research. Australian & New Zealand Journal of Psychiatry, 47(12), 1165-1175. doi: 10.1177/0004867413502090

Carter, J. D., McIntosh, V. V., Jordan, J., Porter, R. J., Frampton, C. M., & Joyce, P. R. (2013). Psychotherapy for depression: A randomized clinical trial comparing schema therapy and cognitive behavior therapy. Journal of Affective Disorders, 151(2), 500-505. doi: 10.1016/j.jad.2013.06.034

Schluter, P. J., Spittlehouse, J. K., Cameron, V. A., Chambers, S., Gearry, R., Jamieson, H. A., Kennedy, M., Lacey, C. J., Murdoch, D. R., Pearson, J., Porter, R. J., Richards, M., Skidmore, P. M. L., Troughton, R., Vierck, E., & Joyce, P. R. (2013). Canterbury Health, Ageing and Life Course (CHALICE) study: Rationale, design and methodology. New Zealand Medical Journal, 126(1375). Retrieved from http://www.nzma.org.nz/journal

Vierck, E., Porter, R. J., Luty, S. E., Moor, S., Crowe, M. T., Carter, J. D., Inder, M. L., & Joyce, P. R. (2013). Further evidence for slow binocular rivalry rate as a trait marker for bipolar disorder. Australian & New Zealand Journal of Psychiatry, 47(4), 371-379. doi: 10.1177/0004867412474105

Crowe, M., Porter, R., Inder, M., Lacey, C., Carlyle, D., & Wilson, L. (2012). Effectiveness of interventions to improve medication adherence in bipolar disorder. Australian & New Zealand Journal of Psychiatry, 46(4), 317-326. doi: 10.1177/0004867411428101

Douglas, K. M., Porter, R. J., & Johnston, L. (2012). Sensitivity to posed and genuine facial expressions of emotion in severe depression. Psychiatry Research, 196(1), 72-78. doi: 10.1016/j.psychres.2011.10.019

Douglas, K. M., & Porter, R. J. (2012). The effect of childhood trauma on pharmacological treatment response in depressed inpatients. Psychiatry Research, 200(2-3), 1058-1061. doi: 10.1016/j.psychres.2012.06.015

Douglas, K. M., & Porter, R. J. (2012). Associations between hypothalamic-pituitary-adrenal axis function and facial emotion processing in depressed and control participants. Psychiatry & Clinical Neurosciences, 66(5), 442-450.

Coulston, C. M., Tanious, M., Mulder, R. T., Porter, R. J., & Malhi, G. S. (2012). Bordering on bipolar: The overlap between borderline personality and bipolarity. Australian & New Zealand Journal of Psychiatry, 46(6), 506-521. doi: 10.1177/0004867412445528

Bourke, C., Porter, R. J., Carter, J. D., McIntosh, V. V., Jordan, J., Bell, C., Carter, F., Colhoun, H., & Joyce, P. R. (2012). Comparison of neuropsychological functioning and emotional processing in major depression and social anxiety disorder subjects, and matched healthy controls. Australian & New Zealand Journal of Psychiatry, 46(10), 972-981. doi: 10.1177/0004867412451502

Watson, S., Gallagher, P., Porter, R. J., Smith, M. S., Herron, L. J., Bulmer, S., … and also Elmslie, J. (2012). A randomized trial to examine the effect of mifepristone on neuropsychological performance and mood in patients with bipolar depression. Biological Psychiatry, 72(11), 943-949. doi: 10.1016/j.biopsych.2012.05.029

Douglas, K. M., Porter, R. J., Knight, R. G., & Maruff, P. (2011). Neuropsychological changes and treatment response in severe depression. British Journal of Psychiatry, 198, 115-122. doi: 10.1192/bjp.bp.110.080713

Mace, J. L., Porter, R. J., Dalrymple-Alford, J. C., Wesnes, K. A., & Anderson, T. J. (2011). The effects of acute tryptophan depletion on neuropsychological function, mood and movement in the healthy elderly. Journal of Psychopharmacology, 25(10), 1337-1343. doi: 10.1177/0269881110389094

Bell, C., Bourke, C., Colhoun, H., Carter, F., Frampton, C., & Porter, R. (2011). The misclassification of facial expressions in generalised social phobia. Journal of Anxiety Disorders, 25(2), 278-283. doi: 10.1016/j.janxdis.2010.10.001

Dalrymple-Alford, J. C., Livingston, L., MacAskill, M. R., Graham, C., Melzer, T. R., Porter, R. J., … Anderson, T. J. (2011). Characterizing mild cognitive impairment in Parkinson's disease. Movement Disorders, 26(4), 629-636. doi: 10.1002/mds.23592

Dalrymple-Alford, J. C., MacAskill, M. R., Nakas, C. T., Livingston, L., Graham, C., Crucian, G. P., Melzer, T. R., … Keenan, R., Wells, S., Porter, R. J., … Anderson, T. J. (2010). The MoCA: Well-suited screen for cognitive impairment in Parkinson disease. Neurology, 75(19), 1717-1725. doi: 10.1212/WNL.0b013e3181fc29c9

Bourke, C., Douglas, K., & Porter, R. (2010). Processing of facial emotion expression in major depression: A review. Australian & New Zealand Journal of Psychiatry, 44(8), 681-696. doi: 10.3109/00048674.2010.496359

Mace, J. L., Porter, R. J., Dalrymple-Alford, J. C., & Anderson, T. J. (2010). The effects of acute tryptophan depletion on mood in patients with Parkinson's disease and the healthy elderly. Journal of Psychopharmacology, 24(4), 615-619. doi: 10.1177/0269881109105572

McLellan, T., Johnston, L., Dalrymple-Alford, J., & Porter, R. (2010). Sensitivity to genuine versus posed emotion specified in facial displays. Cognition & Emotion, 24(8), 1277-1292. doi: 10.1080/02699930903306181

Mace, J. L., Porter, R. J., Dalrymple-Alford, J. C., Wesnes, K. A., & Anderson, T. J. (2010). Effects of acute tryptophan depletion on neuropsychological and motor function in Parkinson's disease. Journal of Psychopharmacology, 24(10), 1465-1472. doi: 10.1177/0269881109105721

Douglas, K. M., & Porter, R. J. (2010). Recognition of disgusted facial expressions in severe depression. British Journal of Psychiatry, 197, 156-157. doi: 10.1192/bjp.bp.110.078113

Douglas, K. M., & Porter, R. J. (2009). Longitudinal assessment of neuropsychological function in major depression. Australian & New Zealand Journal of Psychiatry, 43(12), 1105-1117. doi: 10.3109/00048670903279887

Doudney, K., Harley, J. A., Pearson, J. F., Miller, A., Aitchison, A., Kennedy, M. A., Porter, R. J., Elmslie, J. L., & Joyce, P. R. (2009). Upstream genetic variant near INSIG2, influences response to carnitine supplementation in bipolar patients with valproate-induced weight gain. Acta Neuropsychiatrica, 21(3), 133-140. doi: 10.1111/j.1601-5215.2009.00379.x

Douglas, K. M., Porter, R. J., Frampton, C. M., Gallagher, P., & Young, A. H. (2009). Abnormal response to failure in unmedicated major depression. Journal of Affective Disorders, 119, 92-99. doi: 10.1016/j.jad.2009.02.018

Malhi, G. S., Adams, D., Lampe, L., Paton, M., O'Connor, N., Newton, L. A., … Porter, R., Mulder, R. T., & Berk, M. (2009). Clinical practice recommendations for bipolar disorder. Acta Psychiatrica Scandinavica, 119(Suppl. 439), 27-46. doi: 10.1111/j.1600-0447.2009.01383.x

Elmslie, J. L., Porter, R. J., Joyce, P. R., Hunt, P. J., Shand, B. I., & Scott, R. S. (2009). Comparison of insulin resistance, metabolic syndrome and adiponectin in overweight bipolar patients taking sodium valproate and controls. Australian & New Zealand Journal of Psychiatry, 43(1), 53-60. doi: 10.1080/00048670802534341

Malhi, G. S., Adams, D., Porter, R., Wignall, A., Lampe, L., O'Connor, N., … Mulder, R. T. (2009). Clinical practice recommendations for depression. Acta Psychiatrica Scandinavica, 119(Suppl. 439), 8-26. doi: 10.1111/j.1600-0447.2009.01382.x

Thomas, A. J., Gallagher, P., Robinson, L. J., Porter, R. J., Young, A. H., Ferrier, I. N., & O'Brien, J. T. (2009). A comparison of neurocognitive impairment in younger and older adults with major depression. Psychological Medicine, 39, 725-733. doi: 10.1017/S0033291708004042

Porter, R. J., Mulder, R. T., Joyce, P. R., Miller, A. L., & Kennedy, M. (2008). Tryptophan hydroxylase gene (TPH1) and peripheral tryptophan levels in depression. Journal of Affective Disorders, 109(1-2), 209-212. doi: 10.1016/j.jad.2007.11.010

Porter, R. J., Douglas, K., & Knight, R. G. (2008). Monitoring of cognitive effects during a course of electroconvulsive therapy: Recommendations for clinical practice. Journal of ECT, 24(1), 25-34.

Porter, R. J., Sellman, D., Joyce, P. R., Davies, J., & Frampton, C. (2008). Prolactin response to fenfluramine in abstinent, alcohol-dependent patients. Addiction Biology, 13(3-4), 380-385.

McLellan, T., Johnston, L., Dalrymple-Alford, J., & Porter, R. (2008). The recognition of facial expressions of emotion in Alzheimer's disease: A review of findings. Acta Neuropsychiatrica, 20(5), 236-250.

Porter, R., Booth, D., Gray, H., & Frampton, C. (2008). Effects of the addition of remifentanil to propofol anesthesia on seizure length and postictal suppression index in electroconvulsive therapy. Journal of ECT, 24(3), 203-207. doi: 10.1097/YCT.0b013e3181662ca0

Bell, C., Bhika, S., Porter, R., Frampton, C., Carter, J., McIntosh, V., Jordan, J., & Joyce, P. (2008). The response to sulpiride in major depression before and after cognitive behavioural therapy: D2 receptor function. Acta Neuropsychiatrica, 20(4), 199-206.

Porter, R., Heenan, H., & Reeves, J. (2008). Early effects of electroconvulsive therapy on cognitive function. Journal of ECT, 24(1), 35-39.

Mace, J., Porter, R., O'Brien, J., & Gallagher, P. (2008). Cognitive effects of acute tryptophan depletion in the healthy elderly. Acta Neuropsychiatrica, 20(2), 78-86.

Harvey, M. A., Sellman, J. D., Porter, R. J., & Frampton, C. M. (2007). The relationship between non-acute adolescent cannabis use and cognition. Drug & Alcohol Review, 26, 309-319.

Porter, R. J., Gallagher, P., & O'Brien, J. T. (2007). Effects of rapid tryptophan depletion on salivary cortisol in older people recovered from depression, and the healthy elderly. Journal of Psychopharmacology, 21(1), 71-75. doi: 10.1177/0269881106064341

Sambeth, A., Blokland, A., Harmer, C. J., Kilkens, T. O. C., Nathan, P. J., Porter, R. J., … Riedel, W. J. (2007). Sex differences in the effect of acute tryptophan depletion on declarative episodic memory: A pooled analysis of nine studies. Neuroscience & Biobehavioral Reviews, 31, 516-529.

Gallagher, P., Robinson, L. J., Gray, J. M., Porter, R. J., & Young, A. H. (2007). Neurocognitive function following remission in major depressive disorder: Potential objective marker of response? Australian & New Zealand Journal of Psychiatry, 41, 54-61.

Joyce, P. R., Williamson, S. A. H., McKenzie, J. M., Frampton, C. M. A., Luty, S. E., Porter, R. J., & Mulder, R. T. (2007). Effects of childhood experiences on cortisol levels in depressed adults. Australian & New Zealand Journal of Psychiatry, 41, 62-65.

Elmslie, J. L., Porter, R. J., Joyce, P. R., Hunt, P. J., & Mann, J. I. (2006). Carnitine does not improve weight loss outcomes in valproate-treated bipolar patients consuming an energy-restricted, low-fat diet. Bipolar Disorders, 8, 503-507.

Bourke, C. M., Porter, R. J., Sullivan, P., Bulik, C. M., Carter, F. A., McIntosh, V. V., & Joyce, P. R. (2006). Neuropsychological function in bulimia with comorbid borderline personality disorder and depression. Acta Neuropsychiatrica, 18, 162-167.

Porter, R. J., & Gallagher, P. (2006). Abnormalities of the HPA axis in affective disorders: Clinical subtypes and potential treatments. Acta Neuropsychiatrica, 18, 193-209.

Joyce, P. R., Porter, R. J., Mulder, R. T., Luty, S. E., McKenzie, J. M., Miller, A. L., & Kennedy, M. A. (2005). Reversed diurnal variation in depression: Associations with a differential antidepressant response, tryptophan: Large neutral amino acid ratio and serotonin transporter polymorphisms. Psychological Medicine, 35, 511-517.

Porter, R. J., Mulder, R. T., Joyce, P. R., & Luty, S. E. (2005). Tryptophan and tyrosine availability and response to antidepressant treatment in major depression. Journal of Affective Disorders, 86, 129-134.

Porter, R. J., Phipps, A. J., Gallagher, P., Scott, A., Stevenson, P. S., & O'Brien, J. T. (2005). Effects of acute tryptophan depletion on mood and cognitive functioning in older recovered depressed subjects. American Journal of Geriatric Psychiatry, 13(7), 607-615.

Porter, R. J., Gallagher, P., Watson, S., & Young, A. H. (2004). Corticosteroid-serotonin interactions in depression: A review of the human evidence. Psychopharmacology, 173, 1-17.

Porter, R., Frampton, C. M., Joyce, P. R., & Mulder, R. T. (2003). Randomized controlled trials in psychiatry: Part 1: Methodology and critical evaluation. Australian & New Zealand Journal of Psychiatry, 37, 257-264.

Porter, R., Gallagher, P., Thompson, J. M., & Young, A. H. (2003). Neurocognitive impairment in drug-free patients with major depressive disorder. British Journal of Psychiatry, 182, 214-220.

Mulder, R. T., Frampton, C. M., Joyce, P. R., & Porter, R. (2003). Randomized controlled trials in psychiatry: Part II: Their relationship to clinical practice. Australian & New Zealand Journal of Psychiatry, 37, 265-269.

Porter, R., Lunn, B. S., & O'Brien, J. T. (2003). Effects of acute tryptophan depletion on cognitive function in Alzheimer's disease and in the healthy elderly. Psychological Medicine, 33, 41-49.

Porter, R., Mulder, R. T., & Joyce, P. R. (2003). Baseline prolactin and L-tryptophan availability predict response to antidepressant treatment in major depression. Psychopharmacology, 165, 216-221.

Porter, R., Gallagher, P., Watson, S., Smith, M. S., & Young, A. H. (2003). Elevated prolactin responses to L-tryptophan infusion in medication-free depressed patients. Psychopharmacology, 169, 77-83.

Mulder, R. T., Porter, R., & Joyce, P. R. (2003). The prolactin response to fenfluramine in depression: Effects of melancholia and baseline cortisol. Journal of Psychopharmacology, 17(1), 97-102.

Young, A. H., Gallagher, P., & Porter, R. J. (2002). Elevation of the cortisol-dehydroepiandrosterone ratio in drug-free depressed patients. American Journal of Psychiatry, 159(7), 1237-1239.

Porter, R. J., Gallagher, P., Watson, S., Lunn, B. S., & Young, A. H. (2002). The effects of sub-chronic administration of hydrocortisone on hormonal and psychological responses to L-tryptophan in normal male volunteers. Psychopharmacology, 163, 68-75.

Porter, R., Marshall, E. F., & O'Brien, J. T. (2002). Effects of rapid tryptophan depletion on salivary and plasma cortisol in Alzheimer's disease and the health elderly. Journal of Psychopharmacology, 16(1), 73-78.

Porter, R. J., & Mulder, R. T. (2002). Inadequate availability of pharmacological treatment for affective disorders in New Zealand. New Zealand Medical Journal, 115, 78-81.

Porter, R., Barnett, N. A., Idey, A., McGuckin, E. A., & O'Brien, J. T. (2002). Effects of hydrocortisone administration on cognitive function in the elderly. Journal of Psychopharmacology, 16(1), 65-71.

Porter, R., Linsley, K., & Ferrier, N. (2001). Treatment of severe depression - non-pharmacological aspects. Advances in Psychiatric Treatment, 7, 117-124.

Stanton, B. R., David, A. S., Cleare, A. J., Sierra, M., Lambert, M. V., Phillips, M. L., Porter, R. J., … Young, A. H. (2001). Basal activity of the hypothalamic-pituitary-adrenal axis in patients with depersonalization disorder. Psychiatry Research, 104, 85-89.

Porter, R., Lunn, B. S., Walker, L. L. M., Gray, J. M., Ballard, C. G., & O'Brien, J. T. (2000). Cognitive deficit induced by acute tryptophan depletion in patients with Alzheimer's Disease. American Journal of Psychiatry, 157, 638-640.

Watson, S., Porter, R., & Young, A. H. (2000). Effect of hydrocortisone on the pituitary response to growth hormone releasing hormone. Psychopharmacology, 152, 40-46.

Porter, R. J., McAllister-Williams, R. H., & Young, A. H. (1999). Acute effects of venlafaxine and paroxetine on serotonergic transmission in human volunteers. Psychopharmacology, 146(2), 194-198.

Porter, R. J., McAllister-Williams, R. H., Jones, S. J., & Young, A. H. (1999). Effects of dexamethasone on neuroendocrine and psychological responses to L-tryptophan infusion. Psychopharmacology, 143(1), 64-71.

Porter, R. J., McAllister-Williams, H., Lunn, B. S., & Young, A. H. (1998). 5-hydroxytryptamine function in man is reduced by acute administration of hydrocortisone. Psychopharmacology, 139(30), 243-250.

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Journal - Research Other

Averill, I. R. E., Beaglehole, B., Douglas, K. M., Jordan, J., Crowe, M. T., Inder, M., Lacey, C. J., Frampton, C. M., … Porter, R. J. (2019). Activation therapy for the treatment of inpatients with depression: Protocol for a randomised control trial compared to treatment as usual. BMC Psychiatry, 19(1), 52. doi: 10.1186/s12888-019-2038-2

Burdick, K. E., Millett, C. E., del Mar Bonnín, C., Bowie, C., Carvalho, A. F., Eyler, L. T., … Porter, R. J., … Young, A. (2019). The International Consortium Investigating Neurocognition in Bipolar Disorder (ICONIC-BD). Bipolar Disorders. Advance online publication. doi: 10.1111/bdi.12748

Crowe, M., & Porter, R. (2019). Translating evidence into mental health nursing practice: User-centred design. Journal of Psychiatric & Mental Health Nursing. Advance online publication. doi: 10.1111/jpm.12514

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