Showing posts with label teaching. Show all posts
Showing posts with label teaching. Show all posts

Friday, November 23, 2012

Confirmation Bias as a form of Lying

Dear KC,

We lie to each other all the time. I do not mean conscious untruths, which I am sure happens more than we would care to admit, or white lies that we say to make others feel comfortable. I am not sure anyone else would define it as lying, but it bears the same relationship to lying as involuntary manslaughter does to murder. It is not the intent, but the ability to know better that's the problem.

It's interesting watching or participating in those idea exercises that all seem to come from the same manual in business school. You know what I mean. A facilitator or teacher asks some questions or has some prompts presented on flip charts or poster board. Everyone is then asked to write down their thoughts on sticky notes or posters, and then group and analyze the results. Which is fine, and is often useful enough in class to generate ideas. It's not something I've managed to use yet to teach stoichiometry, for example, but perhaps it's just a sign of my own lack of creativity.

What I am not sure of is how useful the process is in identifying problems or giving non-obvious feedback. I've seen the process now a few times, and each time it generates a list of ideas or solutions, and it clearly identifies which ideas are in the majority. I'm not sure how different it is from a poll, which is a lot quicker, or how identifying what everyone already knows is useful when everybody already knows it. I presume it's useful if you have management or administration that's completely out of touch with its employees, which likely means you have bigger problems with regards to communication. It is kind of a problem in the same vein as XKCD's heat map; determining the obvious and making it seem like new information.

At some point confirmation bias and cherry picking have to take over. In any data gathering exercise the majority of people are going to state the obvious. The obvious will then confirm what everyone expected; there will be great rejoicing. Any new datum, something unusual that might be important, or runs counter to everyone's expectations, stands a chance of being drowned in the sea of familiar or comfortable ideas.

The attitude previous to the Great Recession seems a clear example of this. In The Signal and the Noise Nate Silver suggests that the signs of the coming recession were not hidden or inaccessible - what was missing was the desire and will to evaluate the evidence without a bias for what we wish to be true. The failure was not failing to see the recession coming. The failure was in only paying attention to data that confirmed that everything was fine and would continue to be fine. I wonder if a group of financial professionals had gotten together before 2008 and did the 'poster/stickynote' exercise if they would have managed to see the evidence without bias, or if it would reinforce their already held biases. I suspect reinforcement. (And if you haven't read Nate Silver's book - do so if you have any interest in the topic. It's a well-written explanation of a complex issue that at least seems like it didn't dumb down any of the important concepts.)

More prosaic examples would be protective parents that only pay attention to anti-vaccination information, or the creationist who can read a hundred articles on evolutionary theory and only see contradictions. To see beyond what you want to see requires that we remind ourselves that our bias is larger than we believe, and that the bias in others is probably smaller than we think.

This not a critique of the process, or a damning of flip-chart idea generation. Predicting developing problems or opportunities is difficult. It may be this is the best method and all methods have their problems. Where the lying comes in is in how often we seem to deliberately pretend that confirmation bias happens to other people. In today's world, with its ubiquitous access to information, ignorance can no longer be an excuse. If a group is generating ideas, then not mentioning such pitfalls amounts to tacitly allowing it to occur.

I'm not sure this type of lying has a word, but it needs one. We have white lies and (presumably) black lies, lies of omission, and bluffing. Lying by allowing our natural human tendency to engage in self-delusion needs its own label. Accusing someone of lying sounds far to strong for what this is. In our culture accusing someone of lying can derail a discussion on the nature of truth rather forcefully as egos and insulted feelings take over, but calling it something would allow us to highlight it when it occurs.

Sadly, I will not be the one to name it. Like Leonard of Quirm, if I was to name something it would be "the-lie-that-results-from-inadequately-accounting-for-psychological-processes-common-to-all-humans-in-a-world-where-such-processes-are-easily-knownable". Not very catchy. Psych-lie? Probably not.

It did get me thinking though. What do I currently hold to be true, that is clearly false? What confirmation bias' have been at play in my own teaching career, what scientific 'facts' have I never questioned? I'm most happy criticizing anti-vaxxers or holocaust deniers - areas where we know that the other side is wrong through ample evidence. In what must be a fairly obvious beam in my own eye, I have never really looked at teaching in the same way.

So I started investigating.

Regards,

Ron

Wednesday, July 22, 2009

Just 8 Things

5.) Develop a Personal Learning Network (PLN)

One of terms bandied about with respect to professional development and teachers is the concept of the PLN, or Personal Learning Network. Although it includes your traditional learning network of friends, collegues, and acquantances with whom you share ideas, a PLN also incorporates web media and especially social networking with things such as Facebook, Twitter, LinkedIn, Blogs, wikis etc. What makes it so powerful is now you can be connected not only locally, but globally with colleagues who share with you common interests and ideas, but also in diverse settings and with different challenges. The breadth of specialized knowledge, relevant to you, available is what makes a PLN so special. Developing a PLN can take many forms. The first, if you've started reading blogs, you're already familiar with. Seeking a collection of relevant and interesting blogs that offer useful advice is a good first step in developing a PLN. Creating your own blog, and then keeping it regularly updated, takes time and patience, but can be part of the process as well. When writing your thoughts and ideas you change the participatory pathway so that you are contributing, as well as taking, from the flow of ideas. Whether or not someone reads your blog is almost beside the point: putting your ideas and thoughts in a public forum for critique carries many of the same benefits of recording a journal. If writing a blog seems like too much, the vast majority of blogs also offer the ability to comment and give feedback to the author. Use this feature.

Blogs themselves, as previously mentioned, are not the entire story when it comes to PLN's. When it comes to social networking, I'm going to start with Twitter.

6.) Join Twitter - http://twitter.com/, Sign up for an account, Follow me at http://www.twitter.com/neufeld by clicking the Follow button on my page, go to Twitter4Teachers and look for some other helpful people to add to your PLN. That's really all there is to it, if you'd rather stop reading.

When it comes to PLN, it's hard to explain why, exactly, twitter is so useful. When collecting useful blogs for advice, it was like dipping into a stream of knowledge. When I first tried twitter, I 'followed' a few people, but didn't see much benefit or point. People 'tweeted' about what they were having for dinner or other irrelevant bits of personal material. Then I found a couple of sites that listed teachers who tweet. Rather than a gentle stream of knowledge, it was akin to looking down the end of a fire hose and wondering where the water was, and then having it blast into your face. The person I have to credit for this introduction is Grant Potter who taught a pro-d course on Twitter I attended.

Frankly, if you do nothing else, join Twitter. It's relatively new, and given that I don't know if something newer and better will come along, but I do know I've accumulated more useful resources in a few months of Twitter than I accumulated in years of searching and using things like Google. Twitter is ultimately a very simple tool for cooperation. I must also say, for awhile, you will believe that it's the stupidest and most useless thing on the Internet. That's normal and common. Just keep at it, and you will be assimilated.

First, some links to give an overview: Nine Reasons to Twitter in School, an article trying to explain why it's not a waste of time, Can we use Twitter for Educational Activities, 50 Ways to Use Twitter in the College Classroom, Twitter in Plain English, The Twitter Song, and even primary schools in England are considering teaching twitter and wikipedia as essential new tools.

So, what exactly is Twitter? It's a form of microblogging ("micro" = small, "blogging" = we already covered). Even if you haven't text-messaged anyone yourself, you are probably vaguely aware that your students do that. Twitter is simply a method by which you can send text messages (140 characters max). The difference between regular text messaging and Twitter, is that you're not text messaging any particular person, and you can message not only from your phone, but also your computer, and a record of your messages (called "tweets") are kept in your Twitter profile online (making twitter a searchable database as well as a texting service). If anyone "follows" your Twitter profile, they will automatically be messaged when ever you send a new tweet, and vice verse. As well, you're not limited to text, but can send links, photos, audio clips.

Although it sounds much more restrictive than regular blogging, the restrictive nature usually makes microblogging more topical, and more useful. I mean really, how many people are still reading this email/blog? I've gone on and on, and in a typical busy school year who really has the time to read all of that, let alone write it? Twitter forces people to be succint, and communicate only the most critical bits.

This is, of course, if you are following what I consider 'good tweeters'. Twitter itself doesn't seem to really help this, as the question it offers at the top of the entry box is "What are you doing?". As an example of such, I did find a twitter user who tweeted he was excited about having prawns for dinner, then he tweeted about how many prawns he ate, and how good they tasted, and lastly he tweeted about how sick he felt, and how he shouldn't have eaten those prawns. Unless you're his Mom, I rather suspect this isn't all that interesting to anybody. If you're not finding interesting stuff on Twitter, stop following The Prawn People.

There are a few people I follow who do offer tidbits of their life, like Adam Savage and Grant Imahara from the Mythbusters. Their life sometimes seems a tad more interesting than mine, and they often tweet pictures from the set and updates on what new episode they're working on.

Beyond those, however, I follow a number of people. Here are some of those that I've found most valuable.

http://www.twitter.com/grantpotter - Useful Web 2.0 resources, commentary
http://twitter.com/sanmccarron - Science teaching resources
http://twitter.com/ChemEdLinks - Chemistry and Web 2.0 resources
http://twitter.com/MySMARTSpaces - SmartBoard resources, UK based

Which brings me to:

7.) Find some Twitter friends to follow!

Best place to start is Twitter4Teachers, which lists teachers that tweet by subject area. As well, I have found 515 Scientific Twitter Friends useful too. Once you begin, you will find there is a rapidly expanding kit of resources for the tweeting teacher, particularly as we ‘follow’ each other. As a group of colleagues, when I find a useful link, tool, or idea, the only real method I currently have to share it is to email the entire faculty. This clutters up your inboxes, and is probably considered spam by many. If, however, my colleagues and I were all part of a Twitter group, I could tweet the link, tool or idea, where it’s easily ignored by those that aren’t interested, but picked up by those that are, cutting across barriers such as time, space, and (most formidable of all), department.

8.) Develop your tweeting skills

If you've started using Twitter, and want more to explore, work your way through the Top 100 Tools for the Twittering Teacher.

There is a lot I haven't covered, how to personalize your page, useful Twitter tools, etc, but if you've started you'll find a plethora of links to help you.

Cheers,

Ron Neufeld
Canada's Best Boarding School

Tuesday, July 14, 2009

Just 2 Things - Part I

A major project kept me away from blogging for a long time - luckily that's slowly winding down. Part of that project involves a focus-year for professional development for our school on technology. If it seems odd that I'm blogging about the importance of reading blogs...this was also emailed to my colleagues. Hopefully I don't end up in somebody's permenant blacklist for spam.

This is for those teachers that would like a head start on their pro-d, before classes, marking, and the usual marathon starter gun goes off. Funnily, most of the things you can do as 'pro-d' also qualify as an enjoyable summer's afternoon, so in this series of blog posts I will very roughly outline a few suggestions. Pick and choose or ignore.

1.) Start Reading blogs.

Whether it's in education, or your own interests, simply becoming more familiar with the ever increasing blogosphere would be a great investment in time. There are is a blog for every interest, some of my personal favorites are Bad Astronomy, Pharyngula, Skepchick, and Skepticblog, all of which keep me loosely up to date on science and critical thinking and any Internet memes that happen to be flying about. And if a student asks me an off-the-wall question about the Moon Hoax, I might have a chance of answering it.

Educationally, the following is my current list of education-based blogs that I'm reading:
Of course, I haven't been doing this long enough for my list to necessarily be a good guide, but there are many other places for recommendations. Sylvia, from the Generation Yes blog published a list (Bookmark This!), and for science and critical thinking www.resurch.org is a wonderful list from the author of the SkepDad blog, and of course as previously mentioned Discover Magazine and Seed Media Group both host many quality science blogs.

I also have my own blog, which is either linked in this email, or you're reading this article in it. It contains such amazing advice I find I often have to hid it amid poor grammar, spelling and logic just to ensure Blogger isn't overrun with readers.

You may have noticed a particular theme running through my recommendations, vaguely along the lines of science-based resources. On the Internet, however, if you can think of a resource, somebody else has either invented it, or written about it. From the Blog "Making Teachers Nerdy", I found a much better list than my own: "Educational Blogs You Should Be Investigating", covering a wide variety of interests, plus 50 Must-Read Up and Coming Blogs by Teachers, and focusing on educational technology, check out 20+ Must-Read Education Technology Blogs. Beyond that, it would be useful if, having found some great blogs in your own subject area, share their recommendations here in the comments section for everyone else.

So, when your significant other mentions that some chore needs to be done, or certain relatives need visiting, you can slump your shoulders slightly and claim that you've already got some critical work to do for next year. And then snuggle up with your laptop/desktop and some good reads. My wife is probably far too busy to actually read my posts, so I should be able to still get away with this for some time yet.

2.) Write your own blog.

You didn't think blogs created themselves did you? And you don't think your own thoughts are important enough to publish? Nonsense. If everyone had that kind of attitude, the Web wouldn't be the kind of place it is today!

Seriously, even if you never intend to blog, investigating how it's done is useful in and of itself. I know of two people that write private blogs, viewable only by themselves, as it can never be 'found' in the house, and is accessible for writing anywhere there is an internet connection. I write a family blog with family photos that's only my immediate family can see. Whether you write for an audience of one or one million, or are even just exploring the process, set up an account and start.

There are many free alternatives for blogging, obviously I'm most familiar with Blogger, but there's also Live Journal and WordPress as two others that immediately come to my uninformed mind. Like always, somebody else has already created a great list of 40+ Free Blog Hosts.

Of course, I can't quite leave it at that without a word of warning. As will be true of anything that involves people putting content on the web, rather than just receiving content, use good judgement. As a rough guideline, if you wouldn't want to see it attributed to you on a public billboard, don't put it on the web.

Remember, nothing suggested is mandatory. If you find one blog with one article that was useful, you're good.

Cheers,

Ron Neufeld
Canada's Best Boarding School

Sunday, February 8, 2009

Twitter, Teaching and Education

I just finished some pro-d at knowschools.ca about education and the basics of microblogging (essentially a Twitter tutorial).

I'd just started using Twitter and had gone through the initial "why would anybody bother to use this" phase, and was using it to update students for extra help sessions during exams. There have been a couple of 'aha' moments, and if you're an educator I would highly recommend exploring microblogging.

Twitter itself doesn't do a very good job of suggesting what it's for. Answering the question "What are you doing?" immediately gives the wrong impression. Nobody wants to know what you're having for supper, or what music you're listening too (although many seem to disagree). The key to using twitter as a support for education is connecting to a community of shared interests. On nearly the first day I was directed to a community that listed twitter users by educational specialty. I signed up to follow a few Tweeters that seemed relevant. Within 5 hours I'd received updates on education sites for Smart Board use, moodle advice, and a variety of other useful links. As well, a twitter search comes with its own RSS feed! http://tinyurl.com/be5q8k + http://search.twitter.com/ & rss feed for search = automatic moodle updates for class. Just include the same unique hash tag in each twitter update, and you've got a quick way of updating your course moodle site with relevant web links for your classes.

In short, it's worth exploring. I'd be curious what uses anybody else has found.

Cheers,

Ron Neufeld
Canada's Best Boarding School