The science of getting your own back

Martha Gill's "Irrational Animals" column.

There’s a fantastic scene at the end of Quentin Tarantino’s film Death Proof. Three young girls are being hunted by Kurt Russell, a psychopath with a stunt car and a foot fetish. We have watched him torture and kill his way through the film, and, as he wends his way towards this group, their naivete is used as a foil to his ever increasing menace. In the last three minutes they beat him to death with an iron pole. It’s a great ending.

Outside Hollywood, the idea of revenge is often pushed into the background, especially when explaining our motives. We call it “justice” or “righting a wrong” or “balancing the scales”, but these notions don’t do much for us biologically, and don’t show up in an obvious way in the brain (it’s a grey area). Revenge, on the other hand, has a very clear neural signal, and that signal is pleasure.

A classic psychology scenario - the prisoner's dilemma - can be combined with neuroimaging to show this quite clearly. In the dilemma, two people have committed a crime and are being held in separate cells. They can either confess and get a reasonable sentence or blame the other, and get a light one. If both blame the other, though, they get the longest sentence of all.

In a study published in 2006, by Tania Singer at UCL, researchers asked two “prisoners” to play this out in front of an audience. Then members of the audience were then put inside fMRI machines while they witnessed each prisoner receiving electric shocks to his hands. As they watched, they showed increased activity in neural pain areas – evidence of empathy. Surprisingly, though, this empathy was present only when watching one of the “silent partners”. If a “confessor” was punished, the activity died down considerably. It looked like the brain cared much less about the pain of those who had betrayed their partner.

There was another finding that Singer didn’t expect. Watching “bad” prisoners get punished gave members of the audience pleasure: there was activation in reward-related areas of the brain, such as the ventral striatum and the nucleus accumbens. (This was limited to male subjects.)

So, we - or at least the men among us - get pleasure from revenge. According to similar studies, we also get activity in the left prefrontal cortex of the brain, which relates to goal planning. Revenge, then, seems to be not only a passing delight, but a craving, something we need, that we plan for. The desire increases when we are mistreated in front of others – we need to show people we’re not to be pushed around – and decreases when we’ve got more to lose by exacting it. In other words, the emotion has a logic to it.

Does it have an evolutionary function? Literature is littered with sayings about revenge and how it never pays, or is better expressed by forgiving the other person, or is exacted by “living well” (with gritted teeth). Yet our neurobiology feels otherwise. Which is right?

Well, let’s return to the prisoner’s dilemma. The dilemma itself is whether or not to trust your partner, but this issue figures only in the beginning. As the game plays out, round after round, prisoners seek petty revenge on each other, punishing the other for betraying them. Eventually, burned out, the two settle on a compromise. And this may be the lesson. Fear of retribution keeps us behaving fairly to others, making co-operation possible. This is why we love watching people get their comeuppance in Singer's test, and why we love watching Quentin Tarantino's films. Revenge is a sweet necessity.

Actress Emily Vancamp from the US drama Revenge. Photograph: Getty Images

Martha Gill writes the weekly Irrational Animals column. You can follow her on Twitter here: @Martha_Gill.

This article first appeared in the 11 February 2013 issue of the New Statesman, Assange Alone

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Would the BBC's Nazi drama SS-GB have felt half so resonant a year ago?

This alternate history is freighted with meaning now we're facing the wurst-case scenario. 

Would SS-GB have felt half so resonant a year ago? Though the clever-after-the-fact Nostradamus types out there might disagree, I can’t believe that it would. When it comes to the Second World War, after all, the present has helpfully stepped in where memory is just beginning to leave off. The EU, in the process of fragmenting, is now more than ever powerless to act in the matter of rogue states, even among its own membership. In case you hadn’t noticed, Hungary, for instance, is already operating as a kind of proto-fascist state, led by Viktor Orbán, a man whom Jean-Claude Juncker, the president of the European Commission, jokingly likes to call “the dictator” – and where it goes, doubtless others will soon follow.

The series (Sundays, 9pm), adapted from Len Deighton’s novel, is set in 1941 in a Britain under Nazi occupation; Winston Churchill has been executed and the resistance is struggling to hold on to its last strongholds in the countryside. Sam Riley plays Douglas Archer, a detective at Scotland Yard, now under the control of the SS, and a character who appears in almost every scene. Riley has, for an actor, a somewhat unexpressive face, beautiful but unreadable. Here, however, his downturned mouth and impassive cheekbones are perfect: Archer, after all, operates (by which I mean, barely operates) in a world in which no one wants to give their true feelings away, whether to their landlady, their lover, or their boss, newly arrived from Himmler’s office and as Protestant as all hell (he hasn’t used the word “degenerate” yet, but he will, he will).

Archer is, of course, an ambiguous figure, neither (at present) a member of the resistance nor (we gather) a fully committed collaborator. He is – or so he tells himself – merely doing his job, biding his time until those braver or more foolhardy do something to restore the old order. Widowed, he has a small boy to bring up. Yet how long he can inhabit this dubious middle ground remains to be seen. Oskar Huth (Lars Eidinger), the new boss, is keen to finish off the resistance; the resistance, in turn, is determined to persuade Archer to join its cause.

It’s hard to find fault with the series; for the next month, I am going to look forward to Sunday nights mightily. I would, I suppose, have hoped for a slightly more charismatic actress than Kate Bosworth to play Barbara Barga, the American journalist who may or may not be involved with the British resistance. But everything else seems pretty perfect to me. London looks suitably dirty and its inhabitants’ meals suitably exiguous. Happiness is an extra egg for tea, smoking is practically a profession, and
the likes of Archer wear thick, white vests.

Swastikas adorn everything from the Palace of Westminster to Trafalgar Square, Buckingham Palace is half ruined, a memorial to what the Germans regard as Churchill’s folly, and the CGI is good enough for the sight of all these things to induce your heart to ache briefly. Nazi brutality is depicted here as almost quotidian – and doubtless it once was to some. Huth’s determination to have four new telephone lines installed in his office within the hour is at one end of this horrible ordinariness. At the other is the box in which Archer’s mutinous secretary Sylvia (Maeve Dermody) furiously stubs out her fag, full to the brim with yellow stars.

When I first heard about The Kettering Incident (Tuesdays, 12.20am; repeated Wednesdays, 10pm) I thought someone must have found out about that thing that happened one time I was driving north on the M1 with a more-than-usually terrible hangover. Turns out it’s a new Australian drama, which comes to us on Sky Atlantic. Anna (Elizabeth Debicki), a doctor working in London, pitches up back in Tasmania many years after her teenage friend Gillian disappeared into its Kettering forest, having seen a load of mysterious bright lights. Was Gillian abducted by aliens or was she, as some local people believe, murdered by Anna? To be honest, she could be working as a roadie for Kylie, for all I care. This ponderous, derivative show is what happens when a writer sacrifices character on the altar of plot. The more the plot thickens, the more jaw-achingly tedious it becomes.

Rachel Cooke trained as a reporter on The Sunday Times. She is now a writer at The Observer. In the 2006 British Press Awards, she was named Interviewer of the Year.

This article first appeared in the 24 February 2017 issue of the New Statesman, The world after Brexit