The Observer Effect: A Prologue (Part 1 of 6)
Willie Nelson – The Scientist
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Yogi Berra1 once said “You can observe a lot by watching”. And aptly so, as one of the main things that an education teaches us2 is not only the power of careful observation, but the methods by which we learn to be careful observers.
As we are told, the better observing and measuring we can do, the better results we’re likely to achieve.
Or so the story goes.
What I will be exploring in this blog series, beginning today, and continuing over the next six posts is a concept called The Observer Effect: specifically, what it is, how it currently applies to classrooms and education policy, as well as how it might affect proposed changes to education policy. Be sure to subscribe to the blog to follow along. So without further ado, here we go.
So what on earth is “the observer effect”? Well, as best as I can explain it, while the complex definition of “the observer effect” involves a combination of particle physics, quantum mechanics, and general technical gobbledygook, the simple definition is this: The very act of observing something affects that which is being observed. Or put even more simply, you can’t observe something without affecting it in some way3.
Because my plan for this series is to mainly hit the theme of how the Observer Effect fits within the context of teacher evaluation, it’s almost natural to want to start off with the question of “How do we minimize the Observer Effect?”
In reality, however, this is the wrong question to be beginning with. After all, if you’re a teacher like I am, you depend on the Observer Effect as part of your classroom instruction. For example, let’s say I am giving a test next Friday, the purpose of which is to evaluate and observe the levels of learning that my students have achieved. As a teacher, I will, along with most of my colleagues, announce the upcoming test in advance to my students. Now here’s the kicker: The whole reason I announce the test in advance is because I not only believe in the reality of the Observer Effect, but I hope in it’s reality to do good.
Now any teacher worth his or her salt, will not only announce an upcoming test, but will no doubt, also encourage their students to study for it. A student “studying” for an upcoming test is exactly the result of the Observer Effect. The student’s behavior (i.e. “studying”) has, in fact, been affected by a mere observation (the test). Not only to teachers know that students’ behavior will (or, at least, should) be affected by the observation, I’m guessing most teachers, including myself, actually hope for this. Yes, of course I want to have my students study for an upcoming test. What’s even more fascinating (although not necessarily a great teaching practice) is when teachers observe (i.e. assign upcoming assessments) in order to change student behavior more than assess current levels of progress. So before we go decrying the Observer Effect, it’s worth noting that it’s not necessarily something to be completely minimized.
A better question to start with than “how do we minimize the effect of observing” would be “to what extent is the Observer Effect likely to result in changed behaviors that we actually want (or, at least, tolerate)?” or “how can or should observations be structured so that the naturally occurring change in behavior of the observed is something desirable?”
Simply put, as a teacher, I’m going to keep announcing my tests in advance to my students because I believe in the value of studying for an upcoming test. When the changed behavior is a desired one, the observation (i.e. the test) is, in fact, aligned to what I am willing to tolerate (or in this case, even want).
In conclusion, as we move forward in this series, it’s important to think not of whether the Observer Effect is “good” or “bad”, but acknowledging that the Observer Effect exists, and knowing how to use it to the advantage of kids.
Stay tuned for more on this intriguing topic…or at least for songs as cool as the aforementioned Willie Nelson’s cover of Coldplay.
A shout out to my friend and colleague, Tyler, whose alma mater,
Ace Frehley – New York Groove
When, in high school, I had finished being enveloped in the fast-paced action of Jules Verne’s adventures on The Mysterious Island, I imagined another 19th century work of high esteem might satiate my continuing desire for literary escapism.










John & Yoko – Happy X-mas (War is Over)