Psychology presentations do not usually end up with fisticuffs and a punch up. However, fifty years ago, there was a brawl sparked by a controversial psychologist’s speech which has lessons for us today. The fracas, and the reasons for it, are issues which still reverberate throughout our cultural and social life.
Hans Eysenck, intelligence and race
German-born British psychologist Hans Eysenck (1916 – 1997) was the preeminent psychologist of his generation. Heavily cited in the literature, he was the go-to academic in matters of psychology. Assigned to speak about intelligence, IQ and race at the London School of Economics in 1973, his upcoming presentation was the focus of protests by leftwing student groups.
Eysenck, taking up the torch from American educational psychologist Arthur Jensen (1923 – 2012), claimed that intelligence was not only largely inherited, but that different racial groups achieved unequal social outcomes due to genetic differences. Eysenck and Jensen’s view were popular among white nationalist circles. They provided a veneer of scientific ‘respectability’ to viewpoints long considered racist and beyond the pale.
No sooner had Eysenck begun his speech, than students from Maoist and Afro-Asian solidarity groups jumped the stage and assaulted Eysenck. Knocked to the ground and beaten, the incident became one of the first no-platforming episodes in recent history.
It turns out that the Maoist students were correct, though not for the reasons they stated. Eysenck, similarly to his mentor Sir Cyril Burt, was posthumously exposed as a scientific fraud and systematic liar. Manufacturing data to support his pre-existing conclusions about race, heredity and intelligence, Eysenck’s papers have been declared unsafe by his previous employer as a result of his scientific misconduct.
Genomics – explaining ourselves through genes
Psychology, along with the rest of the social sciences, has taken up the gene-centric perspective of society. To be sure, neuroscience, the study of the brain and nervous system, predates the discovery of DNA by decades. However, genetic explanations of every aspect of human behaviour, from alcoholism to sexual orientation, has become predominated by the sweeping and swift genomic claim of ‘it’s in the genes.’ Mapping the human genome was supposed to unlock the mysteries of the basis of human behaviour.
The concept of heritability has been surrounded by confusion – and deliberate sleight of hand – by proponents of genetic determinism for a long time. Charles Murray and Richard Herrnstein, two psychologists and coauthors of The Bell Curve, postulate that intelligence is largely inherited. Following in the footsteps of Eysenck – and the American psychologist Arthur Jensen – the hereditarian advocate locates the origins of capitalist socioeconomic and racial inequality in an individual’s genes. A meritocratic society, we are told, will be rewarded for their ‘good’ genes.
There is a fundamental misunderstanding about the role of heritability here. Heritable is implicitly equated with inevitability, or determined. In casual conversation, we all talk about children inheriting traits from their parents – height, hair colour and so on. Let’s have a closer look at the concept of heritability. When something is genetic, it does not mean that it is inevitable in the phenotype.
Let’s look at genetic factors for disease risk. Heritability is a statistical concept, which means that the risk factors for a particular disease within a given population are due to heredity. The heritability estimate of a trait is expressed within the range of 0.0 to 1.0; 0 means little if any genetic factors, and 1.0 means entirely all the trait is due to heritability. For instance, Crohn’s disease has a heritability estimate of 0.75.
What does that mean? It means that within a given population, 75 percent of the risk factors for developing the disease are attributable to hereditary causes. No, it does not mean that if your parents have Crohn’s disease, you as an individual have a 75 percent chance of developing it. No, it does not mean that 75 percent of Crohn’s disease is determined by your genes. Heritability estimates apply to a given population, not to specific individuals in that population.
There is not a simple, linear gene-to-trait causal linkage. For instance, there are multiple genes identified with the expression of schizophrenia. The multifactorial causes of schizophrenia, many of which are non-genetic, are slowly being understood. There is no single ‘intelligence gene’, let alone a racial component in the expression and exercise of intelligence.
Pankaj Mehta, associate professor of physics at Boston University, observes that most phenotypes outcomes, such as height and eye colour, are not purely dependent on genes alone. Mehta explores the example of height, which we think is influenced by genes alone. There is an example, while drawn from horrifying social conditions, does illustrate the point.
During the 1980 and 90s, the Guatemalan Mayan community was targeted by American supported death squads. Mayan children who fled with their families, were raised in the United States. When comparing the respective heights of Mayan children who remained in Guatemala as opposed to US-raised Mayans (between six and twelve years old), researchers found the American-raised children were 10 centimetres taller than their Guatemalan counterparts. Better nutrition, diet and stable educational lifestyle all played a part, more so than heredity, in determining the height outcomes of these children.
Eysenck – spokesperson for big tobacco
Scientists are always debating each other. Controversy is part of the job. However, when a scientist is paid by an interested party in that controversy to manufacture misinformed doubt, that is scandalous. Eysenck, back in the 1990s, produced papers purportedly demonstrating that personality types, rather than cigarettes and its carcinogenic ingredients, were the main determinants of lung cancer.
His theory of ‘cancer prone’ and ‘heart disease’ prone personality types removed the culpability of smoking cigarettes (and the tobacco companies who own and sold them) for human mortality. Years later, an interesting fact came to light; Eysenck had received thousands of pounds in funding from tobacco companies for his research.
It is not so much Eysenck’s financial skulduggery which is at issue here, outrageous as that is. It is the pervasive and secretive influence of dark money on our political, media and scientific institutions. Not only have tobacco companies spent billions manufacturing doubt about the links between nicotine and lung cancer, American and British billionaires have funded fake think tanks, astroturf citizen groups – denying the reality of human-induced global warming.
The Koch family has spent billions on academic institutions which promote the ultra-libertarian philosophy of free markets and reduced government. Denouncing the influence of ideology, they advocate an ideology of unfettered neoliberalism. The ultrarightist Cato Institute churns out seemingly scholarly output in defence of right wing politicians. It advocates a version of individual liberty which somehow morphs into the freedom of corporations to exploit and plunder.
The malign influence of dark money did not end with Eysenck’s death. It continues to metastasise in the institutions of government and science. We must not allow the billionaire megaphone from drowning out the voices of the marginalised. I do not advocate individual violence in the manner of the Maoist students who attacked Eysenck. However, storming the outsize megaphones of the billionaire class is just as urgent today as it was fifty years ago.