On vaccines and autism

Last week I asked the question: What would it take to change your mind? I figured I should probably think of an answer for myself, this post includes some thoughts from my contemplation. This is not a complete argument for or against anything that I haven’t already stated, just some thoughts in process. Any thoughts of yours are certainly welcome.
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I don’t believe that autism is mercury poisoning, I’ve said that before. As for the number / types of vaccines being a trigger (I don’t believe it is a cause in the Newtonian sense), I’ve been thinking about it lately but haven’t seen any data to help me make a my mind.

Along those lines, the Age of Autism (which is, I must note, very openly of the opinion that mercury in the form of thimerosol in vaccines and/or the number of vaccines given to kids is the primary cause of most autism) yesterday pointed to the 2008 pediatrics vaccination schedules (0-6 years and 6 years and over).

WOW!!

That was about all I could think when I looked at the schedule. The schedule in and of itself doesn’t lead me to believe anything different than what I knew before, but it does give me an extra data point. The human immune system is an incredible, incredibly intelligent, incredibly complex system. (Though I’m sure there are many books specifically on the subject, The Genius Within includes a very description of how the process works.)

The challenge with a complex system (as opposed to a merely complicated system) is that the outcome of any given input to the system can not be predicted and that a specific cause for a measured outcome cannot be identified. From Dave Snowden (who thinks about complexity a lot):

  • Complex systems can not be predicted, they are non-causal (taking cause in its normal Newtonian sense) in nature they evolve and the same thing will not happen again twice, we can predict aspects of the system and different aspects of time but never the outcome of the whole system
  • The concept of a non-causal system is a very difficult one to grasp as the west abandoned the idea at the time of the Enlightenment (Vico and others were prophetic in arguing against this).
  • A complex system can be simulated - which increases understanding but simulation should not (although it is often) confused with prediction
  • We can understand starting conditions as a complex system evolves and we can influence their evolution if we focus on barriers and attractors (1st and 2nd order constraints) but not if we look at the end point (so attempting to predict makes things worse not better)
  • Humans tend to premature convergence (seeing a pattern too quickly before it is stable) and also to retrospective coherence (implying past causality where there was none). Both of these tendencies are pervasive and dangerous

Which brings me to a very interesting dilemma:

  • If autism (has a cause and) is indeed caused by an insult to the immune system, we can not predict which vaccine or combination of vaccines will cause it; and,
  • Once autism is caused in an individual we can not look back through their vaccination history to determine which vaccine it was that did the causing.

And this doesn’t even bring into play the complexity of the interaction between the immune system and the rest of the body or the role of genetics, and genetic predisposition.
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Autism and "I"

Not that long ago, Kev Leitch converted his Left Brain / Right Brain blog into a team blog. I had been considering shutting down 29 Marbles and stopping blogging, but decided to take Kev up on his offer. That way, I could continue to post very intermittently without feeling the pressure of trying to keep a site up on my own.

Unfortunately, Kev has since shut down the blog (as you will see if you click the link above to LB/RB). To maintain some continuity and a record of my posts, I’ve decided to republish them here. This is the first of four posts I published at LB/RB.

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Earlier this summer I read Douglas Hofstadter’s new book, I Am a Strange Loop. As Hofstadter mentions early in the book, a more appropriate title would have been “I” is a Strange Loop; the book is about the nature of consciousness, that elusive concept of “I”, and not an autobiographical work as the actual name of the book suggests.

Hofstadter’s works have been among my favorites since I read his first book, Godel Escher Bach: An Eternal Golden Braid, in high school. The new book is, in fact, an updating of the ideas he first expressed in GEB. I have long hoped that he might address issues of the mind and consciousness in terms of atypical minds (such as autism), but aside from some passing discussion of those minds, I Am a Strange Loop does not provide any real insight into how the concept of “I” fits with autism.

On Monday, I was pleased to find a paper that specifically addresses the question of autism and “I”, Self-Referential Cognition and Empathy in Autism, co-authored by Michael V. Lombardo, Jennifer L. Barnes, Sally J. Wheelwright, and Simon Baron-Cohen. From the paper’s abstract:

Background. Individuals with autism spectrum conditions (ASC) have profound impairments in the interpersonal social domain, but it is unclear if individuals with ASC also have impairments in the intrapersonal self-referential domain. We aimed to evaluate across several well validated measures in both domains, whether both self-referential cognition and empathy are impaired in ASC and whether these two domains are related to each other.

Conclusions/Significance. We conclude that individuals with ASC have broad impairments in both self-referential cognition and empathy. These two domains are also intrinsically linked and support predictions made by simulation theory. Our results also highlight a specific dysfunction in ASC within cortical midlines structures of the brain such as the medial prefrontal cortex.

Instead of looking at autism as a syndrome of self-focus (the Kanner approach), the paper starts from the concept of “absent-self” put forth by Uta Frith in her book Autism: Explaining the Enigma. I had not heard of Frith before reading this paper, so I can’t really comment on her ideas. But the paper itself seems to make sense. I’m still going through it, trying to understand all that they are studying and what their results mean. (I did learn a new word: alexithymia - difficulty identifying and describing one’s own emotions.)

My first time through I Am a Strange Loop was to soak in the big concepts. I typically wait a few months before re-reading something like this so I can get into the details, but I think I’ll start again sooner than that. (At the moment, I’m reading Steven Pinker’s latest book The Stuff of Thought.) Now that I have a bit more information about autism and “I”, I’ll have a better context for processing what I read.

Another interesting note about the paper, it was originally published by the Public Library of Science under a Creative Commons license. The PLoS home page describes it as a “A new way of communicating peer-reviewed science and medicine”, so I will assume the paper has been appropriately peer reviewed. But I think I will do a bit more checking just to be sure. (Of course, any insight from readers here would be greatly appreciated.)

Has autistic intelligence been underestimated?

Has autistic intelligence been underestimated through the years? I think many of you know what my answer is going to be (YES! of course), but I actually have a scientific study that backs up that claim that I (and many others) have known all along.

I discovered the study, entitled The Level and Nature of Autistic Intelligence (available online through the journal Psychological Science, on the Autism pages of About.com in the article Once Again, the World Discovers That People with Autism are Bright but Different. There is also a discussion of the study on the Science Daily website.

The study was written by Michelle Dawson, Isabelle Soulières, Morton Ann Gernsbacher, and Laurent Mottron. Here’s the abstract of the paper:

Autistics are presumed to be characterized by cognitive impairment, and their cognitive strengths (e.g., in Block Design performance) are frequently interpreted as low-level by-products of high-level deficits, not as direct manifestations of intelligence. Recent attempts to identify the neuroanatomical and neurofunctional signature of autism have been positioned on this universal, but untested, assumption. We therefore assessed a broad sample of 38 autistic children on the preeminent test of fluid intelligence, Raven’s Progressive Matrices. Their scores were, on average, 30 percentile points, and in some cases more than 70 percentile points, higher than their scores on the Wechsler scales of intelligence. Typically developing control children showed no such discrepancy, and a similar contrast was observed when a sample of autistic adults was compared with a sample of nonautistic adults. We conclude that intelligence has been underestimated in autistics.

Unfortunately, you must be a member of the Association of Psychological Sciences to get the article from their website. Another option, the one I’m pursuing, is to get a copy from your local public library (or school library, if you are a student).

I should have it in a couple of weeks, I’ll post more thoughts once I’ve actually read it.

Was Einstein autistic? Does it matter?

When I started reading Walter Isaacson’s new biography of Albert Einstein, one of the first things I did was look in the index to see if autism or Asperger’s was listed. No on both counts.

As I’ve read the book, I’ve found myself unconsciously evaluating the information presented through a diagnostic lens, trying to decide if he was indeed autistic. (See this Google search for a lot of discussion about the topic.)

I’ll post my thoughts on the matter after I’ve finished the book and had the chance to digest it all, but in the meantime the following question came to mind:

Does it really matter if Einstein were autistic or not?

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"In My Language": The video that caught CNN’s eye

The spark that caught CNN’s eye about Amanda Baggs (see my last post if you don’t know what I’m talking about) was her video “In My Language” posted on YouTube. While it is easy enough to just go to YouTube to watch it, I would like to share it here as well.

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Why don’t more people understand this yet?

One of the dangers of being too close to a topic like autism and autism awareness is that you sometimes forget that not everyone has caught up with you in their perception of that issue. Even people you think should know better by now.

An example that recently struck me was how many people still don’t realize that “low-functioning” autistics can be very intelligent.

In her new book Strange Son, author Portia Iverson describes her initial reaction to the idea of an intelligent “low-functioning” autistic:

“There’s a boy I think you should know about,” Francesca Happe began, gesturing for me to sit down. “His name is Tito.” The renowned psychologist from England, whose specialty was autism, continued: “He’s eleven years old and he lives in India. He’s quite autistic, but he can read and write and he’s very intelligent.”

She smiled at me and paused before going on, as if to gauge my reaction.

“Tito is a wonderful poet as well,” she continued. “He’s even published a book, an autobiography with some of his poetry in it.”

“And he’s autistic?” I asked in disbelief, thinking I must have misunderstood.

“Yes, he is definitely autistic. … There is only one Tito in this world, and no one else like him. He is his own disorder,” she replied with certainty.

I knew that no one had ever heard of such a severely autistic person being able to write and communicate independently. But wasn’t there even a remote chance that there could be others who looked and acted just like Tito but couldn’t communicate? At the very least, couldn’t Tito provide an extraordinary window into the most severe kind of autism?

This exchange between Iverson and Happe occurred in Spring 1999 and serves as the starting point of the story that Iverson tells in her book. Not to spoil the ending, but by the end of her story (circa 2003), Iverson comes to the conclusion that to me today seems so obvious: Tito is not one-in-a-million, he is not “his own disorder.”

Fast forward several years to two days ago. From his blog, Dr. Sanjay Gupta of CNN describes a recent meeting he had with Amanda Baggs, author of the ballastexistenz blog:

Amanda is obviously a smart woman who is fully aware of her diagnosis of low-functioning autism, and quite frankly mocks it. She told me that because she doesn’t communicate with conventional spoken word, she is written off, discarded and thought of as mentally retarded. Nothing could be further from the truth. As I sat with her in her apartment, I couldn’t help but wonder how many more people like Amanda are out there, hidden, but reachable, if we just tried harder.

Trying harder starts with getting the word out. But how to go about it? I’m glad that Dr. Gupta has written about Amanda, and that Anderson Cooper had her on his show last night (I’ve not seen it yet). Too much of the coverage of autism is doom and gloom, maybe this will help to get the word out to a few more people.

But I have the feeling it is going to be a long, hard trail, because even those that should know better by now obviously don’t know yet. Dr. Gupta captures this problem well in his closing paragraph:

I am a neurosurgeon and Amanda Baggs opened my eyes about the world of autism.

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There is also a story about Amanda posted on CNN Health.
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Update: From Anderson Cooper’s website on CNN, it looks like he may have more with Amanda on tonight’s show (22 Feb 07).
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