When US President-Elect Joe Biden and Vice President-Elect Kamala Harris gave their victory speeches on Saturday evening, local time, the tally of Electoral College votes showed they had decisively passed the crucial 270-vote threshold, delivering them to the White House this January.

Tradition dictates the losing candidate also gives their own speech to concede defeat. But their vanquished opponent, Donald Trump, hasn’t done that.

We cannot psychoanalyse Trump from a distance, though I am sure many of us have tried.

We can, however, apply psychological theories and models to understand the denial of defeat. My area of research — personality psychology — may prove particularly useful here.