social instinct

Originally posted on what is autism anyway?:

BlaiseLaPsy on Twitter, in response to what I said about the Freudian concept of social instinct, raised an important point about the work of John Bowlby and Harry Harlow that appeared to provide evidence for the existence of a social instinct. I have reservations about the conclusions drawn from Bowlby’s and Harlow’s findings, and about how the term ‘instinct’ is used. First, a brief round-up of Bowlby and Harlow’s research.

Bowlby, who graduated in medicine and qualified as a psychoanalyst in the UK in the 1930s, was interested in the development of children with behavioural problems and those who had been separated from their parents due to being orphaned or hospitalized. Influenced by René Spitz’s work on orphans, Bowlby became an authority on the effects of maternal deprivation and developed Attachment theory. He concluded that for normal social development, children need a secure relationship with a primary caregiver (usually…

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refrigerator mothers

Originally posted on what is autism anyway?:

You could be forgiven for assuming that the ‘refrigerator mothers’ theory for the cause of autism has been consigned to the wastebasket of history. That might be true for children with a formal diagnosis of autistic disorder, but parents are still often under suspicion if their children have autistic characteristics but no diagnosis, or indeed any unusual behavioural characteristics but no diagnosis. Bruno Bettelheim is often credited with inventing the term ‘refrigerator mothers’, but Leo Kanner appears to have come up with the refrigerator analogy first.

Leo Kanner

Leo Kanner

In the comment section at the end of his 1943 paper, Kanner weighs up the evidence for the possible causes of autistic behaviour. The children have schizophrenic characteristics, but their condition differs from schizophrenia because it’s been present from birth – suggesting a biological origin. On the other hand “in the whole group, there are very few really warmhearted…

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there will be a short intermission…

… in posts about autism.

What was intended to be a brief excursion into social workers’ models of child development prompted by my happening to read about Bettelheim and Eileen Munro’s review of child protection at the same time, has turned out to be longer than expected. So in case anyone is wondering when I’m going to say anything else about autism, I’ve started a new blog about children’s services and child development called moving on from bowlby.

I want to continue exploring models of child development for a while because they are very relevant to children with disabilities in general and children with autistic and other unusual behavioural characteristics in particular. I plan to return to posting about autism as soon as possible.

why parents get the blame

Popular opinion about the right way to bring up children has, throughout history, varied between authoritarianism at one extreme and liberalism at the other. Child-rearing practices have typically been determined by expediency, experience or belief. Freud’s ideas about child-rearing caused a sea-change in thinking about the relationship between parents and children, because his ideas were based on an explicit theory involving the biological characteristics of human beings, rather than being derived from beliefs or pragmatic responses to circumstance.

Sigmund Freud

If I’ve understood Freudian psychodynamic theory correctly, it’s grounded in the Darwinian principles of inherited characteristics and natural selection. Freud proposed that the psychological forces that drive behaviour are passed on from generation to generation in the same way as physical characteristics are inherited. Over time, natural selection ensures that the physical characteristics and behavioural drives that maximise a species’ chances of survival are preserved. During a child’s development, all that’s required for these biologically provided physical and behavioural characteristics to ‘unfold’ naturally is a suitable environment. Physical development can be ‘disturbed’ by factors such as a poor diet or living conditions or by practices such as circumcision or foot-binding; behavioural development can be disturbed by parents or other adults being too controlling or imposing unnecessary social or religious taboos. In short, the model is one of each child having a species-specific genetic blueprint for development that, given appropriate conditions, will unfold naturally to produce a healthy adult human being. Two factors could disturb that unfolding process;

-a fault in the mechanism of inheritance (a chromosomal abnormality)
-external interference with the child’s natural course of development.

Two key points about the psychodynamic model

Firstly, the psychodynamic model assumes that potentially there is such a thing as a ‘normal’ human being – someone whose biologically provided development has been allowed to unfold naturally – even if in real life, the course of development is often disturbed, resulting in everybody having flaws of some kind.

The second point is that this theory puts parents squarely in the firing-line – developmental problems arise either because parents have passed on their faulty genes (even if they have no control over that) or because they are the most likely suspects when it comes to the child’s course of development being disrupted.

Psychodynamic theory had a huge impact on thinking about child development in the early part of the 20th century – it made people think about child development for a start. It also had beneficial outcomes for many children in terms of their health, education and psychological development. But there was a downside. Regardless of the personal views of psychodynamic theorists, psychodynamic theory is closely associated with eugenics. Although genocide, enforced sterilisation and limiting opportunities for certain sectors of the community have happened throughout history and would probably have happened in the early 20th century even if psychodynamics hadn’t been thought of, psychodynamic theory undoubtedly lent weight to these policies.

Logo from the Second International Eugenics Conference, 1921

Both Freud and Kanner were aware that knowledge about the biological process of inheritance was sketchy, and both expected subsequent research to shed light on their theories. Although some of Freud’s ideas have received support, there’s little evidence for the idea that social and sexual behaviour derives solely from unconscious drives. Although unconscious processes must affect social and sexual behaviour, the brain areas most involved during our interactions with others are higher-level rather than lower-level areas.

Despite 50 years of research into genetics and brain function bringing psychodynamic theory into question, the two explanations offered by psychodynamics for abnormal human behaviour have become deeply embedded in popular thinking in the developed world; either there’s a genetic/medical explanation or the parents must be responsible. Since WWII politicians and social scientists, not surprisingly, have been wary of genetic explanations for atypical or socially unacceptable behaviour, so causes are frequently framed only in environmental terms, often in terms of childhood experiences. In the absence of a medical diagnosis, the parent is often assumed to be responsible. But research suggests that the relationship between genes, environment and behaviour is much more complex than psychodynamic theory suggested.


The psychodynamic model saw genetic material as providing a blueprint – an engineering diagram – for development, based on Gregor Mendel’s ideas of independent segregation and assortment of genes. But later research has shown that DNA doesn’t work quite like that. DNA is a complex molecule, so when gametes (eggs or sperm) are formed, and when DNA from two parents combines during fertilisation, there’s plenty of scope for genetic variation. Indeed it’s the genetic variation in individuals that maximises a species’ chances of surviving environmental change. Because of the structure of the DNA molecule, some genetic variations are robust enough to be transmitted between generations and are inherited. Others might arise spontaneously. Some variations are common, others rare. As far as genetics is concerned, it’s meaningful to talk about ‘normal’ and ‘abnormal’ in descriptive terms (most people are like this but not like that) but not in normative terms (people should be like this but not like that).


Human beings are biochemical organisms so many environmental factors impact on our development. Some (epigenetic) factors can affect the expression of genes. Other factors, such as diet, toxins, allergens or infections can disrupt physiology and development. Other people’s behaviour affects children but parents aren’t the only people involved; other children, teachers, neighbours and wider community and societal issues can have a significant impact on a child’s development.

In short, what the last 50 years of research has shown is that inherited characteristics and parental behaviour are only two of many factors that interact in complex ways to influence a child’s development. But you wouldn’t know to that to look at current ideas regarding child health, education and social care. In fact, social policy relating to children often reflects the psychodynamic model rather than modern understandings about genetics and child development. I suggest this is largely because of the way we think.

The way we think; heuristics and biases

Human beings are capable of using logical, rational thought but as Herb Simon pointed out, we tend to do so only as a last resort. That’s because the ways of thinking that we’ve evolved as a default tend to be in the form of heuristics (rules of thumb) and biases (inbuilt tendencies) – rough and ready ways of responding to our environment. That’s because rough and ready ways of thinking that are due to the way our brains are wired up and that improve our chances of survival are more likely to get passed on to our offspring. These thinking strategies might maximise our chances of survival, but unfortunately they don’t lend themselves to figuring out solutions to complex problems or planning long-term strategies that will make everybody’s lives better.

For example, human beings have excellent pattern-matching skills. These enable us to recognise a tiger, a rattlesnake or our children, in an instant. They also result in pareidolia – seeing a pattern as significant when it isn’t. We’re good at spotting correlations; helpful when trying to figure out what causes what, but meaning we have a tendency to conflate correlation with causality. We like phenomena to have explanations; that improves our understanding of the world around us, but also results in us inventing concepts like ghosts or evil spirits. We’re also prone to looking for agents -assuming that if something happens someone must have made it happen – not that it could have happened by chance. Heuristics and biases have been investigated in some depth, notably by Daniel Kahnemann, Paul Slovic and Amos Tversky. You can find an extensive list of human biases here, though it’s likely that many of them are actually different facets of a few underlying cognitive phenomena.

Bettelheim’s philosophers

People have long been aware that we don’t get information directly from the world around us, but via the filter of our perceptions. Errors and biases in our perceptions result in theories like the sun moving round the earth or the earth being flat. It’s only when our observations don’t match up with how we think things work that we start using logical rational thought to figure out why. The problem of how to work round unreliable perceptions was what Bettelheim’s favourite philosophers were attempting to tackle. The reason they didn’t opt for the scientific method, which has developed as a way of counteracting unhelpful perceptive errors, was I suspect, because science also gets things wrong. A fundamental point to bear in mind is that science doesn’t deal in certainties, but in degrees of uncertainty. We have enough certainty about some phenomena to land probes on Mars, replace human organs and communicate instantly with someone on the other side of the world. We’re much less certain about the causes of other phenomena – human behaviour, for one. But science has a large toolbox of methods for systematically eliminating less likely explanations for phenomena and investigating explanations that are more likely, so even though our knowledge will always be subject to our perceptions and will always be limited, it is possible to have knowledge that’s reliable enough to be useful.

In my previous post, I highlighted two differences between Kanner and Bettelheim; their use of evidence and their level of relevant expertise. I suggest that these two factors are among the reasons why parents are often (wrongly) blamed for their children’s behaviour.

The use of evidence

Science evaluates evidence by comparing hypotheses about how things happen with observations of what happens. If a theory makes predictions and they turn out to be wrong, we modify the theory – evidence that conflicts with theory can be very informative. Other disciplines handle evidence differently. In disputes, for example, opposing parties marshal evidence that supports their argument, and in courts of law or formal debates an independent party evaluates the evidence from both sides and makes a decision about which is most likely to accurately map onto the real world. The difference between the use of evidence in science and in adversarial situations is that what’s most important to science is what’s actually happening in the real world, not who wins an argument about what’s happening. Obviously scientists do have arguments – and whoever wins influences which theories get investigated and which don’t, but that’s not what science is about.

Many people developing social policy in relation to children are from disciplines that don’t handle evidence in the way science does, so legislation is often derived from policy-based evidence rather than evidence-based policy.

Levels of relevant expertise

Some years ago, I carried out a short research project on men’s and women’s perceptions of the clothing that women wore to work. I employed a technique called card sorts which had previously been used to find out how experts categorised their knowledge. What I found was that men tended to see women’s workwear in either/or terms (e.g. either the woman is married or she isn’t) significantly more frequently than women did. Some people thought this demonstrated that men think in black-and-white terms whereas women think in shades of grey, but other work with card sorts shows that experts in a particular knowledge domain tend to use more complex categorisation than novices. This suggests that women are likely to be experts on the non-verbal signals conveyed by other women’s clothing, but men aren’t. There are implications for theories about how women dress, but that’s another story. Most of my male research participants were professionals, so for the purposes of this post, what my study demonstrated is that you can be an expert in one domain, but a novice in another.

I don’t dispute that GPs, teachers and social workers have expertise; whether they have expertise that enables them figure out who or what is to blame for a child’s abnormal behaviour is another matter. It would be unrealistic to expect everybody to know about everything, but it doesn’t seem unreasonable to expect professionals working with children to have a basic grasp of relevant factors from other domains. For example, I’ve had to explain to a local authority attendance officer why doctors don’t prescribe antibiotics for viral infections. I’ve disagreed with a GP about the ‘gold-standard’ nature of randomised controlled trials and NICE guidelines. And I didn’t even try to explain one of my son’s teachers why spelling isn’t simply reading in reverse, that is, why he might be a good reader but be incapable of spelling words of more than three letters. I’m not alone; recent reports from the UK have drawn attention to the lack of training in child development received by GPs, teachers and social workers.

In the next post, I want to examine three areas where use of evidence and levels of expertise have had a significant impact on social policy development and on the experience of children showing atypical behaviours; attachment theory, fabricated and induced illness and cyclical models of socio-economic deprivation.

Further reading

Kennedy, I (2010). Getting it right for children and young people: Overcoming cultural barriers in the NHS so as to meet their needs. HMSO.

Munro, E (2011). The Munro Review of Child Protection. Final Report: A Child-Centred System. HMSO.

Rugg, G. & McGeorge, P. (2005). The sorting techniques: a tutorial paper on card sorts, picture sorts and item sorts. Expert Systems,22, 94-107.

Teather, S. (2011). Support and Aspiration: A new approach to special educational needs and disability – a consultation. HMSO.

Photograph of Freud by Max Halberstadt, 1921. Image from the Google-hosted LIFE Photo Archive where it is available under the filename e45a47b1b422cca3.

refrigerator mothers

You could be forgiven for assuming that the ‘refrigerator mothers’ theory for the cause of autism has been consigned to the wastebasket of history. That might be true for children with a formal diagnosis of autistic disorder, but parents are still often under suspicion if their children have autistic characteristics but no diagnosis, or indeed any unusual behavioural characteristics but no diagnosis. Bruno Bettelheim is often credited with inventing the term ‘refrigerator mothers’, but Leo Kanner appears to have come up with the refrigerator analogy first.

Leo Kanner

Leo Kanner

In the comment section at the end of his 1943 paper, Kanner weighs up the evidence for the possible causes of autistic behaviour. The children have schizophrenic characteristics, but their condition differs from schizophrenia because it’s been present from birth – suggesting a biological origin. On the other hand “in the whole group, there are very few really warmhearted fathers and mothers” (p. 250), suggesting that development could have been disturbed by parental behaviour. In the end, Kanner concludes “The children’s aloneness from the beginning of life makes it difficult to attribute the whole picture exclusively to the type of the early parental relations with our patients. We must, then assume that these children have come into the world with innate inability to form the usual, biologically provided affective contact with people, just as other children come into the world with innate physical or intellectual handcaps [sic]” (p. 250).

But Kanner later changes his mind. In 1949 he describes his patients as in refrigerators which did not defrost.* In his 1956 paper with Leon Eisenberg he contrasts the low incidence of psychosis and neurosis in the children’s relatives (a sample of around 1000) with the much higher incidence in families of children with schizophrenia and concludes “Thus, if one limits his search for genetic factors to overt psychotic and neurotic episodes in family members, the results would appear to be negative” (p.8). After some discussion of parental characteristics, he decides; “The emotional frigidity in the typical autistic family suggests a dynamic experiential factor in the genesis of the disorder in the child” (p.8) and “These children were, in general, conceived less out of a positive desire than out an acceptance of childbearing as part of the marital contract” (p.10). But less than a decade later, when Bernard Rimland, in his book Infantile Autism: The Syndrome and Its Implications for a Neural Theory of Behaviour suggested that autism might have its origins in the brainstem, Kanner wrote the foreword. And in 1969, Kanner told the first annual meeting of the then National Society for Autistic children “I herewith especially acquit you people as parents” (Feinstein, 2010).

The discussion in the 1956 paper sheds light on what initially appears to be wavering on Kanner’s part about the cause of autism – now he’s blaming biology, now he’s blaming the parents. Kanner wasn’t so much undecided as aware that both factors could be involved. He goes into some detail about the interaction of biological and environmental factors in producing autistic characteristics and describes early infantile autism as ‘a total psychobiological disorder’ – in other words, it isn’t a case of its cause being either genetic or parental. As Michael Rutter observed; “What we have to differentiate is evidence of a broader phenotype. Kanner switched back and forward, which is a mark of his integrity” (Feinstein 2010).

Bruno Bettelheim

Bruno Bettelheim

For Bruno Bettelheim there was no uncertainty about the cause of autism. At first glance, Kanner and Bettelheim appear to have a good deal in common. They were both born into Jewish families in central Europe around the beginning of the 20th century. Both had their studies interrupted; Kanner by military service, Bettelheim by the death of his father. Both fled to the USA as ethnic refugees, both married and raised families there, and both became successful, respected figures in the field of child development. There the resemblance ends.

Bettelheim was born into a well-to-do Viennese family in 1903. As a teenager, he was fascinated by psychoanalysis and read all he could about it. He enrolled as a student of philosophy and history of art at the University of Vienna, but postponed his studies when his father died from syphilis and he had to take over the family lumber business. In 1930 Bruno married his first wife, Gina, who worked at a Montessori nursery. The couple took in a young American child, Patsy, whose mother had sent her to Vienna for therapy with Editha Sterba, a member of the Vienna Psychoanalytic Institute. Bruno was in therapy with Editha’s husband Richard for a while, and his connections with Patsy, the nursery and the Sterbas were to prove a turning point in his career.

Eventually, he was able to resume his studies and was awarded a doctorate in February 1938. Within a month, German troops had entered Austria and Gina had left for the USA with Patsy. Bruno remained in Vienna with his mother and sister. In June, he was arrested, jailed and then taken to Dachau. In September he was moved to Buchenwald and released the following April in an amnesty to mark Hitler’s 50th birthday. Patsy’s mother, Agnes, had managed to arrange a visa for him, and Bruno was reunited with Gina in the USA in May 1939. By then it was obvious that their marriage was over – both had had affairs – and Bruno settled down with Trude, a former girlfriend. His experience with psychoanalysis and child development also got him a job in the education department at the University of Chicago, which led to his appointment as director of the university’s Orthogenic School in 1944, where he was to remain until the early 1970s.

Most of these biographical details are from Richard Pollak’s fascinating biography of Bettelheim The Creation of Dr B. Pollak is aware that his account might be seen as biased. His younger brother, Stephen, had attended the Orthogenic School until his death in an accident whilst on holiday. Bettelheim’s disdain for the boys’ parents and his claim that Stephen had committed suicide despite Richard witnessing Stephen’s fall from a hayloft, and Bettelheim’s suicide in 1990, were what prompted Pollak to research Bettelheim’s life. Although Bettelheim probably had the children’s best interests at heart and certainly changed the Orthogenic School for the better, reactions to him were mixed to say the least. Comments from school staff, parents, children and his students are peppered with reports of admiration, intimidation and humiliation. There’s little doubt that he beat the children and there are some stories of sexual contact, although these accounts, if true, need to be set in context; corporal punishment was common at the time and the psychoanalytic theory embraced by Bettelheim saw sexual expression as natural. Some people hated him, but others felt that Bettelheim’s methods, even if frowned upon, were well-intentioned.

Refrigerator mothers

Probably more widespread harm was caused by Bettelheim’s view of parents, especially mothers. Bettelheim disapproved of children at his school going home for visits and viewed mothers as cold, uncaring and responsible for their children’s behavioural problems. Bettelheim set out his ideas in a series of books including The Empty Fortress: Infantile Autism and the Birth of the Self. Despite the popularity and influence of this book, it’s not clear how much experience of autistic children Bettelheim actually had. He claimed that two autistic children had lived at his home, although Patsy appears to have been the only one, and she wasn’t diagnosed as autistic. Visitors to the Orthogenic School commented on the fact that the children appeared to be normal, if troubled, kids. Bettelheim admitted only children with no physical or intellectual impairment, thus ruling out more severely autistic children. And the success of his techniques was called into question too. In the 1980s a study showed that during Bettelheim’s period as director Orthogenic School, of 220 children entering the school, only 13 were admitted with a diagnosis of autism (Bettelheim diagnosed many children himself) and not all the children had made the progress he claimed.

Aside from contrasts in their life experience, with regard to their contribution to autism research I want to highlight two key differences between Kanner and Bettelheim; the way they used evidence and their level of relevant expertise.

Use of evidence

Kanner had a medical background, derived testable hypotheses from the best theory available at the time, and wasn’t afraid to change his conclusions if the evidence dictated. Bettelheim had trained in philosophy and appears to have made up his mind in advance about the cause of autism and then selected evidence to support his theory. Pollak refers to an essay Bettelheim wrote about the philosophers who shaped his thinking as a student. Significantly, the philosophers – Lessing, Lange and Vaihinger – all saw historical truth as a construct of the mind. Vaihinger argued in his book The Philosophy of “As If” that even though fictions should not be mistaken for true propositions, they can work As If true (Pollak, 1997; p.15). Bettelheim seems to have put Vaihinger’s ideas into practice; in a cv compiled in 1942 he exaggerated his credentials and frequently reported events in a way which conflicted with the recollection of other witnesses.

Level of relevant expertise

Kanner was aware that his theories about the cause of autistic characteristics were limited by the biological knowledge available at the time. Nonetheless, he clearly understood the complexity of child development and was careful to rule out a number of possible causes for autism before arriving at his conclusions. Without doubt, Bettelheim was also knowledgeable, about psychoanalysis and theories of child development that is; the reference section in The Empty Fortress is extensive. But he appears to have had little knowledge about biology and his explanations for the children’s behaviour are in terms of psychoanalytic concepts only. Indeed, he was actively opposed to biological theories for the causes of autism, attacking Kanner and Rimland in The Empty Fortress and telling Thomas Kemper that his brain studies must indicate a different kind of autism (Feinstein, 2010).

Bettelheim’s influence

What puzzles me is how Bettelheim’s book could become so influential amongst professionals with medical training, long after research into genetics and brain function had shown that psychoanalytic and psychodynamic theories of child development were lacking. Bettelheim was preoccupied by psychoanalytic symbolism. He saw the children’s interest in balls, balloons, light fittings and automobile headlamps as symbolic of their relationship with the breast. Their words had deep symbolic meaning – ‘breakfast’ meant ‘break breast’, ‘Connecticut’ meant ‘connect-I-cut’ and even an interest in the weather on the part of a non-verbal child symbolized her fear that she might be devoured (‘weather’ meant ‘we/eat/her’). This should have been enough to suggest that his theory might not have a solid grounding. Bettelheim’s use of symbolism extended to his lectures, resulting in the (in)famous knitting/masturbation story. Bettelheim is reported to have said to a female student, knitting during one of his lectures; “Don’t you realize your knitting is nothing but a sublimated form of masturbation? You’re sitting in front of the entire class masturbating.” The student is alleged to have replied; “Dr Bettelheim, when I knit, I knit! And when I masturbate, I masturbate!”

Despite the lack of evidence for his theories they were very influential. The Empty Fortress was the first book on autism translated into Spanish, Bettelheim’s lectures were shown on French national tv, in the 1980s most of the books on autism in Danish libraries were by Bettelheim, and it wasn’t until 1998 that the International Association for Child and Adolescent Psychiatry and Allied Professions decided that “parents have absolutely no responsibility for their children’s autism” (Feinstein 2010). As Judy Barron, the parent of an autistic child, observed when she read The Empty Fortress, “I wasn’t a scientific reader and I certainly wasn’t a researcher; I was a twenty-four-year-old mother; but I just didn’t see any evidence to support his pronouncements” (Pollak, 1997, p. 275).

The use of evidence and levels of expertise; two factors that I plan to explore further in the next post.


Bettelheim, B. (1967). The Empty Fortress: Infantile Autism and the Birth of the Self. The Free Press.
Eisenberg, L. & Kanner, L. (1958). Early infantile autism 1943-1955. In C. F. Reed, I. E. Alexander and S. S. Tomkins (eds.) Psychopathology: A Source Book, Harvard University Press.
Feinstein, A (2010). A History of Autism. Wiley Blackwell.
Kanner, L. (1943). Autistic disturbances of affective contact. Nervous Child, 2, 217-250.
*Kanner L (1949). Problems of nosology and psychodynamics in early childhood autism. American Journal of Orthopsychiatry, 19, 416–26.
Pollak, Richard (1997). The Creation of Dr B, Simon & Schuster

*Paper behind paywall – the citation is from various sources.

image of Bettelheim: Ottofroehlich under Creative Commons licence

that way confusion lies

Whichever way you look at it and whatever you think causes it, autism is a complex phenomenon. So it isn’t surprising that different researchers have different conceptual models of how autistic characteristics and their causes are related. Different conceptual models might confuse the public, but researchers are generally well aware of what other researchers think and why. But confusion can arise when conceptual models appear similar but are subtly different.

Here’s Mary Coleman in an interview with Adam Feinstein: “I came to realize that autism is like mental retardation – it’s a final common pathway in the brain affected by many different underlying causes, many different disease entities.” (p.147).

Feinstein says Coleman is ‘convinced that autism will eventually be found to consist of dozens – possibly hundreds – of different subtypes, each the result of a specific medical condition. She told me: “I’m not talking about co-morbidity. I’m talking about the basic disease which causes the autistic symptoms.”’ (p.194)

Now Isabelle Rapin, also interviewed by Feinstein:

Autism is a behavioural, not a medical diagnosis…I agree entirely with the concept of autism as a disorder of the developing brain. What I emphasize is that autism is defined behaviourally, in the same sense that dementia is behaviourally defined…but is, of course, medically caused. There… is no single cause, but many. I disagree with the idea that autism is a ‘disease’ – in the sense that it has one defined cause. I have always believed it reflects dysfunction of particular circuitry in the brain, whatever the biological cause of the dysfunction.” (p 194)

Thomas Kemper, who with Margaret Bauman carried out some pioneering studies of brain development in autism, says;

I still think there’s a unifying feature or group of features about children with autism: the way they use language, the way they interact socially, their play skills. There is a key group of features. I accept that it is a spectrum. But we should still be hunting for what is similar, the unifying characteristic. Even if Mary Coleman refers to 70 different kinds of autism, she’s still calling it autism. There may be different ways of getting there, but I’m not ready to give up on the hunt for some core, unifying feature of the brains of children with autism.” (p. 210)

fan-in/fan-out model

It seems to me that each of the above researchers subscribes to essentially the same ‘fan-in/fan-out’ model; that many different biological causes can produce impairments in a final common pathway that varies widely in its manifestations. Each has a different but important emphasis. Coleman emphasises the differences between the causal disease entities; Rapin the distinction between behavioural characteristics and their biological causes; and Kemper the similarities in behaviour between children.

The term ‘autism’ is a construct that refers to a triad of types of symptom. Whether that maps on to a single ‘thing’ in the real word remains to be seen, but it’s not safe to assume that it does. Jon Brock has addressed this point elegantly in his blog here.

What I find intriguing is that each of these researchers subscribes to the idea of a ‘final common pathway’, ‘dysfunction of a particular circuitry in the brain’, ‘some core, unifying feature of the brains of children with autism’. What, if anything, all people diagnosed with autism have in common is a moot point. The issue of what it is they actually have in common is dealt with explicitly by John Morton and Uta Frith in their work on causal modelling. I plan to examine this in more detail in a later post, but for the moment I’ll concentrate on the confusion in conceptual models.

That way confusion lies

It’s bad enough having to take into account subtle differences in the same conceptual model. It gets even more confusing when the same terminology has different meanings. I’ve noted some terms that are each used in different ways in the autism literature.

1. autism

can refer to either;

autistic characteristics – impairments in social interaction, communication and flexible behaviour


a medical condition assumed to cause autistic characteristics.

Using the same label for both is like diagnosing patients with a sore throat, rash and fever as having ‘sore-throat-rash-and-fever disorder’. It’s an accurate and valid label – all patients with those symptoms definitely have them – but using that term for both cause and effect wouldn’t make it clear whether you were talking about the symptoms or what causes them. It also implies that all patients have the same cause for their symptoms, when we know that there are many different causes for sore throats, rashes and fevers. In the case of autism the jury is still out on the links between cause and effect, so it’s not safe to assume, implicitly or explicitly, that there is only one underlying cause.

2. disease, illness, disorder, condition

are often used interchangeably.

As far as I can ascertain, the usual technical meanings of these terms are as follows;

disease – an infection that impairs normal function

illness – the patient feels unwell. Patients can have impaired function but not be ill, or be ill but not have impaired function.

disorder – a disruption in normal functioning. Normality is an interesting concept and one I plan to discuss in a later post.

condition – the patient’s state from a medical perspective. The patient doesn’t necessarily have a disease, illness or disorder.

The term ‘autistic spectrum condition’ (ASC) is sometimes used in place of ‘autistic spectrum disorder’ (ASD) because ‘condition’ doesn’t imply there is anything ‘abnormal’ about the person.

3. autism is a disorder with a heterogeneous aetiology

can mean either;

different things cause autistic characteristics in different people


different things cause autistic characteristics in an individual.

This phrase is often found in the introductory sections of research papers, but it’s not always clear what it means. One theory for the origins of autism is that autistic characteristics are triggered by environmental factors if a relevant genetic predisposition is present. It’s possible that several genes might be involved. So the causes of autism within an individual can be heterogeneous. Researchers using the phrase might be saying that different people probably have different causes for their autistic characteristics or might be assuming that every person diagnosed with autism has the same heterogeneous aetiology for their symptoms.

Enough of conceptual models for the moment. Bearing in mind the ambiguities in conceptual models and terminology, I next want to turn my attention to theories about the causes of autism.


Feinstein, A (2010). A History of Autism. Wiley Blackwell.

dual diagnosis: autism and other medical conditions

Many theories have been advanced for the causes of autism. Before looking at them in more detail, I want to examine a broader issue; the association between known medical disorders and autistic characteristics.

In their book The biology of the autistic syndromes, Christopher Gillberg and Mary Coleman devote an entire section (six chapters) to medical conditions associated with a formal diagnosis of autism. (My copy is of the 2nd edition published in 1992; the 1st edition came out in 1985, the 3rd in 2000 and the 4th, entitled The Autisms was published in 2012.) The authors don’t speculate on how the medical conditions they list might be related to autism, but it’s clear from this and later works that they are of the view that there are ‘autisms’, rather than a single disorder with different manifestations. From the preface of The Autisms;

Although Kanner, who first accurately described autism in 1943, likely assumed it was a single disease entity…over time it became clear that this was not so, as multiple studies… were published. Instead autism was found to be a specific set of symptoms found in a conglomeration of different diseases some of which overlapped with the intellectual disability/mental retardation syndromes.” (p.xi)

I think Gillberg and Coleman are suggesting that autistic characteristics (which by definition form a syndrome) arise as a consequence of a range of medical conditions, implying that the causes for autistic characteristics are probably different in different patients – hence the authors referring to ‘autisms’ in the plural. In 1974 Coleman had studied a group of 78 autistic children. In an interview with Adam Feinstein for A History of Autism, she says;

As a result of this [1974] study, I came to realize that autism is like mental retardation – it’s a final common pathway in the brain affected by many different underlying causes, many different disease entities.” (p.147)

I’ve summarised below the ‘disease entities’ listed by Gillberg and Coleman as associated with autism. (The list is from the 1992 edition; later research has expanded on it.)

Gillberg & Coleman's disease entities associated with autism

Gillberg and Coleman are by no means the only authors to identify an association between autistic characteristics and other medical disorders. Here are the ‘organic conditions’ reported by Wing and Gould (1979) in children who met Kanner’s criteria in their Camberwell study:

maternal rubella
infantile spasms
severe perinatal complications
multiple congenital abnormalities
unconfirmed viral illness under 1 year
gastroenteritis under 1 year
unconfirmed head injury under 1 year
operation for cleft palate under 1 year.

Michael Rutter and Eric Schopler (1988) comment:

The last issue concerns the question of etiological heterogeneity within the field of autism syndromes. We have already noted that there is undoubted heterogeneity. The very fact that the clinical picture of autism can arise from diseases as diverse as congenital rubella, tuberous sclerosis, encephalopathy, infantile spasms with hypsarrhythmia, cerebral lipoidosis and neurofibromatosis makes that clear.” [references omitted](p.28)

Patterns of association

Because autistic characteristics involve high-level processes, the relationships between autistic disorder and other medical disorders are likely to be complex and varied. However, the relationships between autistic characteristics, somatic symptoms and underlying causes will fall into one of four basic patterns, as shown below.

relationship between autistic characteristics, somatic symptoms and underlying causes

The section on other medical conditions in Gillberg and Coleman’s book was originally entitled “Disease entities that have a subgroup of patients with autistic symptoms” – in other words, not all children diagnosed with a particular disease entity were autistic, suggesting that for each disease entity:


the sub-group of children with autistic symptoms had a distinct second disorder (an autistic syndrome)


the sub-group of children with autistic symptoms had a predisposition to develop those symptoms and that they have been triggered by the disease entity.

Patterns of association and diagnosis

Depending on how strong the association is between autistic characteristics and a particular medical disorder, diagnosis is likely to proceed as follows;

A. If a medical disorder (e.g. disorder A) is frequently associated with autistic symptoms, it’s likely that the medical disorder will be assumed to account for the autistic symptoms and the child will get a single diagnosis of disorder A.

B. If a medical disorder (e.g. disorder B) is only occasionally associated with autistic symptoms, it’s likely that the medical disorder will be assumed not to account for the autistic symptoms and the child will get a dual diagnosis of disorder B and autistic disorder.

C. If the child has somatic symptoms that don’t fit the criteria for any known medical disorder, unless severe, those symptoms are likely to be overlooked and the child will get a diagnosis relating only to their behaviour – autistic disorder.

Each of these options is problematic if the cause of the child’s symptoms is to be identified, because in each group – A, B or C – the autistic characteristics might or might not be caused by whatever causes the somatic symptoms. The only ways to find out would be either to investigate all the symptoms shown by each individual, or to look at the differences between individuals who are autistic and those who aren’t, in respect of each of the other medical disorders.

What isn’t helpful is to assume that everybody’s autism has the same cause.

Coleman, M & Gillberg, C. (2012) The Autisms (4th edn). Oxford University Press.
Feinstein, A. (2010). A History of Autism. Wiley-Blackwell.
Gillberg, C. & Coleman, M. (1992) The Biology of the Autistic Syndromes (2nd edition). Mac Keith Press.
Rutter, M. & Schopler, E. (1988). Concepts and diagnostic issues in E. Schopler & G.B. Mesibov (eds.) Diagnosis and assessment in autism. Springer.
Wing, L. & Gould, J. (1979). Severe impairments of social interaction and associated abnormalities in children: Epidemiology and classification, Journal of Autism and Childhood Schizophrenia, 9, 11-29.