—Gordon co-authored a paper: ‘The destructiveness of perfectionism revisited: Implications for the assessment of suicide risk and the prevention of suicide’, Gordon L. Flett, Paul L. Hewitt, Marnin J. Heisel, Review of General Psychology (September 2014), 18(3), pp. 156–72. —The most comprehensive study Christian Jarrett, ‘Perfectionism as a risk factor for suicide – the most comprehensive test to date’, British Psychological Society Digest, 27 July 2017.

