Spare me this ‘deficit model’ nonsense

Maybe it’s something in the air: Spring brings out the sociological criticisms of science, or something. But for some reason, this week people have been talking at me about the “deficit model” repeatedly, and it is really beginning to annoy me. The latest source is Alice Bell in the Guardian, who says some sensible things (don’t treat scientists as a priesthood!) and then gets all mushy-mouthed over the myth of the deficit model. How nice of her, though, to define it for us.

It’s the critique of the so-called “deficit model” many of us have been dancing to for decades. The deficit model, if you’re lucky enough not to have come across the term, assumes science has the knowledge the public are deficient in, and that many of our social ills will be solved if we all listened to the experts. It’d be a nice idea maybe if science, the media, policy or people were that simple, but they’re not (I talked about similar issues in my Radio Four piece on scientific literacy last year).

Oh, no…it brings back cranky memories of those annoying rounds of argument with Mooney and Nisbet, who loved to slam us with sneering rebukes that we’re true believers in the Deficit Model, and don’t you know, everybody rejects that model nowadays.

And I’d just, what, say what, I what? I’m right here, why are you arguing with that caricature? Look, I’ve spent decades battling creationists, giving them the actual facts in the face of their distortions, and I know they heard me, and I know they’re not so stupid they couldn’t comprehend what I was saying, and yet they’ll be back the next week saying the same lies. I know that there’s more to getting people on the side of reason then calmly stating the evidence while equipped with a Ph.D. I don’t know anyone who subscribes to this “deficit model” of which you speak.

Here’s the model I actually accept; let’s call it the Obstacle Model. Everyone has a whole collection, to varying degrees, of obstacles that interfere with effective progress: for instance, there’s poverty, and racism, and sexism, and religion, and authoritarianism, and ignorance. Focusing on just one without paying any attention to the others means you won’t get very far. Every good educator knows that teaching is a multi-dimensional problem.

Correcting ignorance has a rather critical role to play in the solution. I think the other factors I listed are more important in giving people the will and capability to make decisions, but addressing an intellectual deficit is essential in giving them the power to decide how to decide; without it, you’ve got a blundering herd of enthusiastic incompetents.

But ignorance also has a special place because it’s the one thing teachers are commissioned to address, so if you’re interested in deprecating expertise, finding a straw man like the “deficit model” to set on fire is a handy tool to knock those scientists and educators down a peg. It’s also a useful bludgeon if you’re a sociologist and want to assert your authority over those puffed-up boffins (not that I think most sociologists have an inferiority complex, but some of the dumbest things ever said about science come out of the mouths of sociologists).

You want examples? Alice Bell continues by citing sociological analyses of the scientific establishment.

The deficit model sticks around partly because it feeds scientists’ social status, implicitly underlining their powerful position as people who get to define what counts as important, true, reliable knowledge. Stephen Hilgartner put it well back in 1990, saying such top down approaches implicitly provide the scientific establishment with the epistemological right to print money. Something we don’t appreciate enough though is that also serves the handmaidens of the deficit model – science communication professionals, less powerful scientists, many science “fans” – offering them some social status by association. Play into a game of hierarchies, and even if you don’t get to the top, you get to climb a bit. Pierre Bourdieu, in his classic sociology of the university campus, Homo Academicus, talks about the way students are happy to submit to the idea that they are inferior to senior academics because doing so earns them subsequent admittance to a distinguished club of graduates. I think we can see similar patterns at work in terms of the way academic ideas are shared outside of universities too.

O My Fellow Scientists, do you feel like you have the right to print money? Here we are in an occupation with relatively limited recompense — we tend to be solidly middle class, which is very nice, but not much more — and we had to spend much of our youth in training, which from a purely economic point of view, represented a tremendous loss in earning potential. Deferring getting an entry level job because you spent a decade in graduate school and post-doctoral positions isn’t sound financial sense. Are these critics even aware of how many scientists get thrown into the churn of the unending provisional appointments? Somehow, though, we always get this criticism from creationists and other outsiders that we’re in it for the big bucks, as if we’re investment bankers or oil company executives.

O My Fellow Scientists, do you feel like you have high social status? I certainly don’t. Scientists are not particularly well-regarded in the communities I live in, except among ourselves; I follow politics, and scientists certainly don’t play much of a role there. Except when they’re trying to fill knowledge deficits (which is constantly trivialized by these critics of the deficit model), scientists are treated as awkward nerds with no social skills at all — the archetype we see flaunted on shows like The Big Bang Theory. You’re very confused if you think Sheldon is regarded as having high social status. He’s a pretentious clown.

O My Fellow Scientists, do you scorn your students and think of them as your inferiors? Maybe some do; I certainly don’t. I’m in this teaching position because I respect and enjoy the company of students. I identify with my students.

And here’s the thing: that hierarchy? Definitely a mixed bag. I remember being a student, and my professors were pretty much just like me, except with added obligations. Graduate school was wonderful — they had to order me to wrap up and get the thesis done. I tried to keep my post-docs going as long as I could stretch them out, because every step up the academic ladder meant less playing in the lab, more uncertainty (where am I going to get a job?), and more teaching and administrative responsibilities. If I had my druthers, I’d still be a grad student.

Even now, I’m dragging my heels about getting promoted to full professor, despite the nudges from my unit head. Promotion would mean a little more money (but I’m not in this job for the money!) and additional responsibilities in campus-wide governance. Why should I do that? Because I’m a good citizen of my university, not because I have some illusion that it will let me lord my superiority over others.

But OK, Bell does salvage the article in the end.

Less cynically, top down models also stick around because scientists do, genuinely, have special ideas and information to share. We pool our resources to allow a few people to cut themselves off and become experts in particular subjects. We do this so that they might feed back their knowledge and we can, collectively, try to make a better world. We should listen to them. As David Dickson wrote in 2005, factual reporting of science can be socially empowering for audiences. It’s worth remembering this. Political systems of scientific advice in government are built partly for this reason too, to make best use of scientific expertise. I don’t want to throw the baby out with bathwater, and lazy critique of science is not just silly, it can be dangerous (if you’ve never read Merchants of Doubt, do).

Yes, that is the way it works. I’m glad to see a realistic perspective on the matter — now if only everyone would realize that most scientists share this same view, and that this deficit model crap is a sociological contrivance intended to take a back-handed slap at expertise.

Say it ain’t so, Genie!

Eugenie Scott is planning to retire from the NCSE. This is not possible. There is no one fit to replace her!

Although…perhaps I should apply for the job. I looked at the qualifications, and it was like looking in a mirror, man — especially that last bit about “the ability to work effectively and diplomatically with diverse communities and allies”. It sounds just like me, right, gang? I should go for it.

Look here, we’re like clones of each other! If I can so perfectly emulate her lecturing gestures, there’s no reason to assume I won’t be as great at the rest.

pz_genie

<quick cut to directors of the NCSE, all looking horrified…then scrambling to find more inducements to Genie to keep her on>

What I taught today: FINAL EXAM TIME!

I’m in Arizona, on my way to Orange County, but that doesn’t stop me: I’ve given my students a take home final exam. I wouldn’t want them to be bored over finals week, you know.

1. In the last lecture, I tried to give you a little context, and explained that a dynamic picture of biology would include evolution, ecology, and development, all subdisciplines that deal with change over time. You’re all upper level students; explain to me how developmental biology fits into the perspective on biology that your experience here at UMM has given you so far. Are there pieces you wish our curriculum emphasized more? Why?

2. We’ve spent most of the semester talking about animals — as it currently stands, evo-devo has an unfortunately limited emphasis on metazoans, with an occasional nod to higher plants. Explore a little deeper. What would an evo-devo of fungi, or bacteria, or protists talk about? Is the toolkit we’ve been talking about truly universal? Give me a brief precis of the developmental principles for any other kingdom.

3. Imagine that after you graduate, you find yourself in an unexpected job: you’re working in university press office or as a science journalist. You have to explain scientific research to the public every day. What general principles would guide you? These should be ideas about ethics, effective communication, psychology, etc. in addition to purely scientific concerns. Tell me what standards you’d have to become a great reporter of science.

There. That should make them think.

When science is criminalized, only criminals will do science

I hate the way chemistry has been infantilized to the point where you can’t even buy a decent home chemistry kit for kids anymore, but this story takes it a step further. A teenager in Florida did a simple experiment that made a small plastic bottle go boom and spew out some smoke (and no one was hurt, although apparently the student was surprised), and the school over-reacted: they expelled her.

It was a simple reaction: aluminum + sodium hydroxide releases hydrogen gas and the pressure ruptures the bottle. It was also a poor decision to do it unsupervised in a school yard, but good grief…kicking her out of school means that interest is now quelled. Channel that perfectly reasonable curiosity into constructive academic pursuits! This school seems to be more concerned with shutting down exploration and keeping everyone unchallenged and safe than in engaging in that dangerous business of education.

What I taught today: toroids!

Hox 11/13 expression in an echinoderm blastula

It was the last day of classes for us. I brought donuts.

Dammit, I just realized I missed a golden opportunity. I should have talked to them about Thrive and Pivar and Fleury and Andrulis. Crackpot fringe developmental biologists all seem to have a thing for donuts.

Rats. Well, I’ll just send all my students an email and tell them they have to come back. They don’t even realize the importance of our little snack together.

What I taught in the development lab today

After our disastrous chick lab — it turns out that getting fertilized chicken eggs shipped to remote Morris, Minnesota during a blizzard is a formula for generating dead embryos — the final developmental biology lab for the semester is an easy one. I lectured the students on structuralism and how there are more to cells then genes (there’s also cytoplasm and membranes and environment) earlier today. This afternnon I’ve given them recipes for soap bubble solution and told them to play. They’re supposedly making little model multicellular organisms by chaining soap bubbles together, and observing how the membranes follow rules of organization just like the ones we see in living tissue.

In case you’re wondering what the recipe is so you can do it too, here’s my bubble soap formula:

  • 5ml Dawn dishwashing soap

  • 100ml DI water

  • 1ml glycerine

It gets better as it ages — there are perfumes and a small amount of alcohol solvent in the dishwashing liquid which evaporate off with time. The students are playing with concentrations, and if you’re making it up fresh and don’t want to wait until tomorrow, you can increase the concentrations of soap and glycerine.

The more glycerine you add, the more long-lasting the bubbles are…and unfortunately, the heavier they are. If you want bubbles that will waft gently on the breeze, you’ll want less glycerine. It’s a very forgiving recipe, just play.

I’ve also provided the students with a couple of books: the classic Soap Bubbles: Their Colors and Forces Which Mold Them by C.V. Boys, and The Science of Soap Films and Soap Bubbles by Cyril Isenberg. They’re more about math and physics, but they have some nice illustrations. These are projects you can do at home with cheap ingredients bought at the grocery store, so those of you with kids might try playing with it this summer. There are simple rules about the angles of intersection between bubbles — if you’re mathematically inclined, take pictures and use a protractor and see if you can work them out. There’s also some really cool stuff going on with colors, since the bubbles have a gradient of thickness from top to bottom and you get wonderful colors caused by refraction and reflection and phase shifts across the membrane.

OK, if you don’t have kids, you have my permission to play with soap bubbles, too. Tell everyone who looks at you funny that you’re doing Science!

What I taught today: a send-off with an assignment

Today was the last day I lecture at my developmental biology students. We have one more lab and one final class hour which will be all about assessment, but this was my last chance to pontificate at them…so I told them about all the things I didn’t teach them, and gave them a reading list for the summer. (I know, there’s no way they’re going to take these to the beach, but maybe when they move on in their careers they’ll remember that little reference in their notes and look it up.)

So here are the books I told them to go read.

We’ve been all up in the evo-devo house this semester, so I urged them to read the antidote, just to get some perspective. This is the great big book all the grown-up developmental biologists read and admire and regard as gloriously wrong in many ways, but still an important reminder that physical and chemical properties of whole cells and organisms matter — it’s not all genes. And of course that legendary book is On Growth and Form by D’Arcy Wentworth Thompson. I tell all my students that if ever they want to get serious about developmental biology, they must read Thompson.

For the more modern gang who like computers and math and logic puzzles, I point them at At Home in the Universe: The Search for the Laws of Self-Organization and Complexity and The Origins of Order: Self-Organization and Selection in Evolution by Stuart A. Kauffman. He’d really benefit from more time in a wet lab, but still, there’s some very provocative stuff in those books about how complexity can spontaneously arise. I also gave them a bit of an introduction to NK network theory.

There is always a philosopher or two in the class, so for them I suggest that they read The Ontogeny of Information: Developmental Systems and Evolution by Susan Oyama. Developmental Systems Theory suffers for its lack of applicability — it really is a little too abstract for most scientists — but I love it for its more holistic approach to development.

For the hardcore biologists, the ones who are ready to read a book where every page makes them think very hard, I suggest Developmental Plasticity and Evolution by Mary Jane West-Eberhard. It’s quite possibly the most brilliant book I’ve ever read, but it’s dense and challenging. Intentionally challenging: she really does question a lot of the dogma of evolutionary and developmental biology, and forces you to realize there are a lot of wide-open, intensely interesting questions out there.

And finally, I brought up a book I seriously think about making the class text every year, Ecological Developmental Biology by Scott F. Gilbert and David Epel. The course as it is now is a fairly traditional modern molecular genetics and development class, with a solid overlay of evolutionary biology. The Gilbert and Epel book integrates all that with ecology — and I firmly believe that the well-rounded biologist of the type a liberal arts university tries to generate ought to have a balanced conceptual understanding of ecology, development, and evolution.

That’s the short list. It’s too bad I don’t have total control of my students’ lives, or I’d have them studying ten or twenty books over the summer. Or they probably think it’s a good thing I don’t.

Bruce Alberts, failure

This is not a very exciting video, but I might just inflict it on my cell biology students in the fall. We got a fair amount of flak from students last time around who were frustrated when labs didn’t work like a recipe from a cookbook — yet that’s how science usually proceeds, with lots of tinkering and frustration and repetition.

I also like his point about how teaching is important for science (although the students won’t really care about that.) I don’t think I really got the breadth of my discipline until I had to master it in order to teach it — there’s nothing quite like the panic behind “I’ve got to lecture for an hour on vesicle transport tomorrow!” to focus the mind wonderfully on a subject you might have found of only passing interest previously.

(via Sandwalk.)

It’s another exam day!

I’ve been terrible about updating everyone about my class the last few weeks — we’re coming up on the end of the semester, so I’ve been going a little bit mad. We’ve been focusing on vertebrate development lately, and right now we’ve got a few dozen fertilized chicken eggs sitting in an incubator and developing embryos. Maybe. It is always a real pain to get these things delivered to remote Morris, Minnesota — I delayed this part of the lab to the very end of the semester, hoping the sun would emerge and warm the hemisphere enough that when UPS took their sweet time getting them to me, they wouldn’t freeze in the back of the truck. As usual, though, next day delivery turned into two day delivery, and we haven’t seen Spring yet. So we’ll soon know whether they survived their harrowing journey through the frigid Northlands, and if they haven’t, I’ll have to throw up my hands and cry.

Or I could torture my students to ease my frustration. Yeah, that’s the ticket. So it’s exam day.

Developmental Biology Exam #3

This is a take-home exam. You are free and even encouraged to discuss these questions with your fellow students, but please write your answers independently — I want to hear your voice in your essays. Also note that you are UMM students, and so I have the highest expectations for the quality of your writing, and I will be grading you on grammar and spelling and clarity of expression as well as the content of your essays and your understanding of the concepts.

Answer two of the following three questions, 500-1000 words each. Do not retype the questions into your essay; if I can’t tell which one you’re answering from the story you’re telling, you’re doing it wrong. Include a word count in the top right corner of each of the two essays, and your name in the top left corner of each page. This assignment is due in class on Monday, and there will be a penalty for late submissions.

Question 1: One of Sarah Palin’s notorious gaffes was her dismissal of “fruit fly research” — she thought it was absurd that the government actually funded science on flies. How would you explain to a congressman that basic research is important? I’m going to put two constraints on your answer: 1) It has to be comprehensible to Michele Bachmann, and 2) don’t take the shortcut of promising that which you may not deliver. That is, no “maybe it will cure cancer!” claims, but focus instead on why we should appreciate deeper knowledge of biology.

Question 2: There is an interesting tension in evo devo: on the one hand, we like to talk about the universality of molecular mechanisms, but on the other hand, we’re also very interested in the differences, both in phenotype and genetics. This is an old debate in evolutionary theory, too, so it’s not unique to development, but how do you reconcile unity and diversity simultaneously?

Question 3: When I told you about axis specification in Drosophila, the story was relatively straightforward: maternal factors switch on a chain of zygotic genes that set up the pattern. When I told you about the same process in vertebrates, though, I didn’t give you the same level of detail—I gave you buckets of transcription factors and said they had various roles. Dig deeper. Pick ONE of these vertebrate dorsalizing factors out of the bucket and tell me more about it: noggin, chordin, frizbee, goosecoid, pintallavis.