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Does Media Multitasking Really Interfere with Student Thinking?
Andrew Watson
Andrew Watson

media multitaskingTo many teachers, it just seems obvious: all that screen times MUST be bad for student brains.

To many other teachers, it just seems obvious: technology will unleash academic possibilities and revolutionize education.

So, which is it? Does media multitasking damage students’ cognitive capabilities? Or, does it allow them new avenues to creative possibilities?

Here’s What We Know

In a recent analysis, Uncapher and Wagner surveyed research into this topic.

Sure enough, they found some troubling evidence.

In half of the studies they examined, people who often use multiple streams of technology scored lower on working memory tests than those who don’t.

In two studies, they had a harder time recalling information from long-term memory.

Studies also showed problems with sustained attention.

Here’s a place where media multitasking might help: task switching. Given all the practice that multitaskers get diverting attention from one gizmo to another, they might well get better at doing so.

Alas, most of the research that U&W examined didn’t support that hypothesis.

Here’s What We Don’t Know: A LOT

Although all of the sentences above are true, they don’t answer most questions with any certainty.

For example, if half of the studies showed that high multitaskers do worse on working memory tests, that means that half of the studies DON’T reach that conclusion.

(It’s important to note that NONE of the studies showed that high multitaskers were better at working memory tasks than their counterparts.)

Uncapher and Wagner repeatedly emphasize this point. We don’t have lots of studies — and those we do have don’t all point the same direction.

Another important question: causality. Perhaps multitasking reduces sustained attention. Or, perhaps people who have trouble sustaining attention multitask more often.

Firm Conclusions

At present, we can conclude with confidence that we don’t have enough evidence to conclude anything with confidence.

Overall, the evidence suggests heavy media multitasking might cause (or might result from) relative weaknesses in several cognitive functions.

We certainly don’t have evidence that encourages us to promote multi-gizmo use.

I myself try to stick to one device at a time. Until more evidence comes in, I’ll gently suggest my students do likewise.

(For thoughts on technology and attention, click here.)

Life Without Memory: Your Hippocampus and You
Andrew Watson
Andrew Watson

Who are you without your memory?

In neurobiological lingo: who are you without your hippocampus?

The Best-Known Answer

No doubt you’ve heard of Henry Molaison, aka H. M., whose hippocampi were removed in order to cure debilitating epilepsy.

The good news: the operation (more-or-less) fixed the epilepsy.

The (very) bad news: without his hippocampi, Henry couldn’t form new long-term memories. In fact, he struggled to recall prior memories as well.

So much of our knowledge about memory formation comes from Henry’s life.

We understand the brevity of working memory because of H. M.

We distinguish between declarative memory (“knowing what”) and procedural memory (“knowing how”) better because of H. M.

As Suzanne Corkin describes in Permanent Present Tense, research into Henry’s very rare brain tells us more about each of our brains.

Today’s News: A New Henry

On December 29 of 2007, artist Lonni Sue Johnson came down with a bad case of viral encephalitis. As a result, she ended up with severe damage to both her hippocampi. This damage, in fact, resembles H.M.’s surgical lesions.

You can read about her case in a remarkable book by Michael D. Lemonick, The Perpetual Now: A Story of Amnesia, Memory, and Love.

Lonni Sue’s situation resembles Henry’s in many ways — they both live in a “perpetual now” — but their stories differ as well.

First: Henry was relatively young at the time of his surgery, and so he hadn’t yet developed professional skills. (Because his epilepsy also proved quite debilitating, he didn’t get very far in school.)

Lonni Sue, however, was an accomplished artist and musician — even an amateur pilot.

For example: she drew several covers for the New Yorker magazine. You might recognize her whimsical style if you google her art.

Second: Her family decided soon after her illness that they would be as public as Henry’s family had been private. They want her remarkable condition — as much as possible — to benefit science, and the public’s understanding of the brain.

For that reason, when Lonni Sue’s sister Aline ran into Lemonick on the street, she asked if he wanted to write about her life without memory.

Third: Lonnie Sue brought a remarkable good cheer to a life that might seem so depressing, even terrifying, to others.

When Lemonick first met her, she brightly introduced herself and showed him her drawings. Then, she introduced him to a word game she often played: “singing the alphabet.”

She sang a list of words that grew in alphabetical order. Here’s what she sang that first time (and, notice how cheerful the words are!):

“Artists beautifully creating delightful exquisite finery giving hospitable inspiration joining keen laughter’s monthly necessities openly preparing quiet refreshment sweetly turning under violet weathervane xylophones yearning zestfully”

Life Without Memory: Research Findings

For the same reasons that Aline invited Lemonick to write about her sister, she has also invited researchers to learn what they can from Lonnie Sue’s brain.

Lemonick does a wonderful job of explaining these research findings. He does go into the methodological details. But he maintains a big-picture emphasis on the history and meaning of the research.

For instance, we saw that research on Henry helped solidify a distinction between procedural and declarative memory. Further research with Lonni Sue suggests that these categories often overlap.

Her knowledge of music, for example, acts like both declarative and procedural knowledge at the same time.

For teachers, this finding just makes sense.

So many of the skills students learn require them to know facts AND procedures. A chemistry lab, a historical investigation, a business plan: all these school accomplishments ask students to know stuff, and to do things with that knowledge.

The Perpetual Now won’t necessarily help classroom teachers design better lesson plans. But, it does help us understand the rich complexity of human memory.

And, it tells the story of an extra-ordinary life: one where “xylophone weathervanes yearn zestfully.”

I recommend the book enthusiastically.

Can Quiet Cognitive Breaks Help You Learn?
Andrew Watson
Andrew Watson

We write a lot on the blog about “desirable difficulties” (for example, here and here). Extra cognitive work during early learning makes memories more robust.

cognitive breaks

Retrieval practice takes more brain power than simple review — that is, it’s harder. But, it helps students remember much more.

Wouldn’t it be great if some easy things helped too?

How about: doing nothing at all?

Cognitive Breaks: The Theory

When a memory begins to form, several thousand neurons begin connecting together. The synapses linking them get stronger.

Everything we do to help strengthen those synapses, by definition, helps us remember.

We know that sleep really helps in this process. In fact, researchers can see various brain regions working together during sleep. It seems that they’re “rehearsing” those memories.

If sleep allows the brain to rehearse, then perhaps a short cognitive break would produce the same result.

Cognitive Breaks: The Research

Michaela Dewar and colleagues have been looking into this question.

They had study participants listen to two stories. After one story, participants had to do a distracting mental task. (They compared pictures for subtle differences.)

After the other, they “rest[ed] quietly with their eyes closed in the darkened testing room for ten minutes.”

Sure enough, a week later, the quiet rest led to better memory. As a rough calculation, they remember 10% more than without the quiet rest.

10% more learning with essentially 0% extra cognitive effort: that’s an impressive accomplishment!

Classroom Questions

A finding like this raises LOTS of practical questions.

Dewar’s study didn’t focus on K-12 learners. (In fact, in this study, the average age was over 70.) Do these findings apply to our students?

Does this technique work for information other than stories? For instance: mathematical procedures? Dance steps? Vocabulary definitions?

Does this finding explain the benefits of mindfulness? That is: perhaps students can get these memory benefits without specific mindfulness techniques. (To be clear: some mindfulness researchers claim benefits above and beyond memory formation.)

Can this finding work as a classroom technique? Can we really stop in the middle of class, turn out the lights, tell students to “rest quietly for 10 minutes,” and have them remember more?

Would they instead remember more if we tried a fun fill-in-the-blank review exercise?

I’ll be looking into this research pool, and getting back to you with the answers I find.

Cognitive Breaks: The Neuroscience

If you’d like to understand the brain details of this research even further, check out the video at this website. (Scroll down just a bit.) [Edit 11/4/19: This link no longer works; alas, I can’t find the video.]

The researchers explain a lot of science very quickly, so you’ll want to get settled before you watch. But: it covers this exact question with precision and clarity.

(By the way: you’ll hear the researchers talk about “consolidation.” That’s the process of a memory getting stronger.)

If you do watch the video, you might consider resting quietly after you do. No need to strain yourself: just let your mind wander…

hat tip: Michael Wirtz

Video: Stress and Memory
Andrew Watson
Andrew Watson

The folks over at TedEd have posted an excellent video exploring the relationship between stress and memory.

The video lasts only a few minutes, but it includes lots of helpful information.

stress and memeory

In particular, note that we can’t simply say “stress harms memory.” We always have to be more specific:

How much stress?

What kind of memory?

When does the stress take place?

What do we want our students to remember?

All these variables matter.

https://www.youtube.com/watch?v=hyg7lcU4g8E

The Unexpected Dangers of Reading (and Writing) Blogs
Andrew Watson
Andrew Watson

A recent post on a well-known education blog beats up on that old nemesis: “rote memorization.”

To highlight this point, the author links to a study on the benefits of “the generation effect.”

When students try to guess at answers to questions, they’re likelier to remember the correct answer even if their initial guess was wrong.

Here’s the study.

Presumably, the study compares “the generation effect” to “rote memorization.” Presumably it concludes the former helps more than the latter.

Nope. Not a bit of it.

This study, instead, looks at different kinds of mistakes that students might make when they guess. It concludes that nearby guesses help, but far away guesses don’t.

Here’s the researchers’ summary: “errors benefit memory to the extent that they overlap semantically with targets.”

The study just isn’t about rote memorization. (Just to be sure, I checked with the study’s lead author. She confirms my understanding of the research.)

Lesson Learned

If you can’t even trust [name-of-well-known-education-blog], what can you do? How can you trust any news from the interwebs.

Here’s my advice:

First: anyone who quotes research should link to it. If you can’t find the link quite easily, don’t make any changes to your teaching.

Second: click the link. (Don’t yet make any changes to your teaching.)

Third: feel a little nervous. You’ve got several daunting pages of big words and bizarro graphs.

Fourth: Think about giving in and just making the changes that the article suggests. Don’t give in to that impulse. No changes yet.

Fifth: read the first paragraph of the research. It’s called the “abstract,” and it should summarize what the researchers did and what they concluded.

If the abstract DOESN’T include the point you read on the website, then you’re done. The research doesn’t focus on the argument that the blogger is making, and so shouldn’t have been cited in the first place.

Lesson learned. Nothing to see here. Move on.

In this case: when you read the abstract about the generation effect, you’d see that it never mentions rote memorization.

Of course, if the abstract DOES include that point — now you can start taking the blog seriously. You might not decide to change your teaching, but at least you’ve got an argument worth considering.

Flipping the Script

I had a similar experience (in reverse) about a month ago. This blog’s software notified me that another blog had linked to my article on omega-3 fish oil.

That post isn’t obviously the sexiest one on the website, so I was a bit surprised to see it getting internet love.

A brief investigation showed that the link came from a website in a foreign language — one that encouraged pregnant women to buy omega-3 fish oil supplements.

Hmmm.

My article summarized research showing that such supplements don’t help with working memory or in-school behavior. Not so much about benefits for pregnant women.

It seems clear that this other blog assumed its readers a) wouldn’t click on the link, and b) if they did, they wouldn’t be able to read English well.

The link was there to fool their readers, not help them.

The Headline

When we see a blog link to research, we can feel reassured. At the other end of the link, doubtless, lies research supporting the author’s point.

Don’t believe it. Don’t trust. Verify.

Click the link. Read the abstract…

Improve Your Syllabus & Lesson Plan With “Prior Knowledge”
Andrew Watson
Andrew Watson

When I talk with my English students about The Glass Menagerie, we always identify the protagonist and the antagonist. This discussion helps them understand useful literary terms. It also clarifies their understanding of the play.

prior knowledge

Of course, as they consider this question, I want them to recall a similar conversation we had about Macbeth. In that play as well, we can struggle to determine who the antagonist might be.

In psychology terminology, I want my students to “activate prior knowledge.” Their discussion of The Glass Menagerie will improve if they think about their prior knowledge of Macbeth.

Here’s the simplest teaching strategy in the world. If I want them to think about Macbeth‘s protagonist before they discuss TGM, I can start our class discussion with Shakespeare.

Rather than hope my students draw on their prior Macbeth knowledgeI can ensure that they do so.

This remarkably simple strategy has gotten recent research support. In this study, Dutch psychologists simply told students to recall prior learning before they undertook new learning. Those simple instructions boosted students’ scores.

Prior Knowledge: From Lesson Plan to Syllabus

This research advice might seem quite simple — even too simple. At the same time, I think it helps us understand less intuitive teaching advice.

You have probably heard about “the spacing effect.” When students spread practice out over time, they learn more than if they do all their practice at once.

To illustrate this idea, let’s look at a year-long plan in a blog by Mr. Benney:

Benney Syllabus 1

As you can see, Mr. Benney teaches his first science topic in September. He then includes topic-1 problems in his students’ October homework (“lag homework”). He reintroduces the subject in December. And returns to it one final time in April.

Clearly, he has spaced out his students’ interactions with this topic.

But, notice what happens when he does this with all eight topics:

Benney Syllabus 2

For many teachers, May looks quite scary indeed. Students are learning topic 8. They’re doing lag homework on topic 7. They’re being reintroduced to topics five and six. And they’re being re-re-introduced to topics 2 and 3.

Six topics all at the same time?

And yet, spacing requires interleaving. If Mr. Benney spreads out topic 1, then it will automatically interleave with the topics he’s teaching in October, December, and April. You can’t do one without the other.

Believe it or not, we have research that “interleaving,” like “spacing,” improves student learning.

Why would this be? After all, May’s syllabus looks really complicated.

Perhaps recent research on “prior knowledge” explains this result. If students are thinking about several topics at the same time, then their prior knowledge from previous months remains active.

Macbeth isn’t something we talked about 3 months ago. We have talked about it several times, including just last week.

Here’s the equation. Spacing automatically leads to interleaving. And, interleaving in turn keeps prior knowledge active. These three teaching strategies combine in multiple ways to help our students learn.

Can a Quick Bicycle Ride Help You Learn Better?
Andrew Watson
Andrew Watson

Can exercise improve memory?

exercise and memoryThat fascinating question has inspired a lot of research. The answer you get often depends quite specifically on the kind of exercise, and the kind of memory, that you study.

For example, a recent study asks this question:

If you exercise after you learn a new motor skill, do you remember that new skill better?

More specifically, if you ride a bike for 20 minutes, does that help?

(The new motor skill is a little tricky to describe. Basically, you use a joystick to make your cursor follow an irregularly moving line.)

Exercise and Memory: Promising Results

Marc Roig and colleagues had 18-35 years do just that. One group rode a stationary bike for 20 minutes before they learned the joystick task. Another group exercised after. And the control group rested quietly for 20 minutes.

What difference did that make?

Helpfully, Roig & Co. retested these participants 3 times: an hour later, a day later, and — marvelously — a week later.

(Many researchers retest participants after an hour or two. That time gap is interesting, but it hardly feels like learning…)

Sure enough: after 7 days, participants who exercised — either before or after — did better on the task than those who didn’t exercise at all.

And, those who exercised AFTER did better than those who exercised BEFORE.

So: we’ve got good reason to think that aerobic exercise after learning a motor skill helps you remember that new skill.

Exercise and Memory: Important Limitations

As noted at the top of this post: the answer to the “exercise and memory” question depends on the specific exercise, and the specific kind of memory.

This study looked narrowly at a visuo-motor task.

We would like to say: “Hey! Let’s have students do jumping jacks after they learn a new geometry theorem. After all: exercise helps learning!”

Unfortunately, we don’t have consistent research showing that exercise directly improves this kind of academic learning.

For example, in one of my favorite studies, Steven Most & Co. found contradictory results when they tested declarative learning and exercise. In his 4 studies: half of the time, that exercise benefited women but not men. Half of the time, it didn’t benefit either women or men.

(I like this study so much because Most and his team are so scrupulous in making their contradictory results clear.)

At the same time, we should remember: brains are a part of the body. We’ve got LOTS of research showing that the habit of exercise is good for the brain, and helps students learn.

If you’re especially interested in this topic, I recommend John Ratey’s book Spark: The Revolutionary New Science of Exercise and the Brain. (It’s not so revolutionary or new anymore, but it’s an easy and persuasive read.)

You Are a Learning Style of One
Andrew Watson
Andrew Watson

In the bad old days, schools seem to have thought about learning this way:

There are two kinds of students: smart ones, and not-smart ones. It’s easy to tell them apart.

If you teach it and I learn it, I’m a smart one.

If you teach it and I don’t learn it, I’m a not-smart one.

(To be clear: I’ve never heard anyone say that so crudely. But that tone suffuses the mythic past of our profession.)

false learning categories

Of course, this theory suffers from one deep flaw: it just ain’t true.

Those are simply false learning categories. We all can learn, but we all learn differently.

If I teach it and you don’t learn it, the problem may very well be with my teaching. You might well learn it some other way.

A Solution, A Bigger Problem

And yet, this optimistic reframe comes with perils of its own. If, in fact, “we all learn differently,” then teachers face an almost impossible challenge.

We have to figure out how each of our students learns, and then tailor all lessons for all of them. A class with 30 students requires 30 lesson plans.

How on earth can such a system work?

Another Solution?

Facing this baffling challenge, I would LOVE to sort my students into reasonable categories.

Instead of saying “there are smart students and not-smart students,” I’d rather say “students can be smart this way, or that way, or t’other way.”

With this framework, I can now have three lesson plans, not thirty. Or, I can have one lesson plan that teaches all three ways simultaneously.

For example: maybe left-handed students learn one way, right-handed students learn a different way, and ambidextrous students learn a third way. If true, this model allows me to honor my students’ differences AND create a coherent lesson plan.

As it turns out, people have proposed many (MANY) systems for sorting learners into “reasonable categories.”

Perhaps boys and girls learn differently.

Maybe introverts differ from extroverts.

Perhaps some people have interpersonal intelligence, while others have musical/rhythmic intelligence.

Maybe some learn concretely while others learn abstractly; some learn visually while others learn kinesthetically.

The list goes on.

Another Problem: False Learning Categories

Let’s add one more to that list:

Perhaps we can sort students according to the Myers-Briggs test. This student here is an ENTJ (extroverted, intuitive, thinking, and judging), while that student there is an ISFP (introverted, sensing, feeling, perceiving).

This system allows me to teach with distinct categories in mind, and so makes my teaching life easier.

Alas, this system suffers from a (familiar) deep flaw: it just ain’t true.

As Clemente I. Diaz explains, the Myers-Briggs Type Indicator doesn’t measure what it claims to measure.

In fact, it can’t. For example: the MBTI acts as if extroversion and introversion are two different personality types. In truth, we’ve all got a some of both — and, different settings bring out the introvert or extrovert in each of us.

All of the seemingly “reasonable categories” listed above are, in fact, false learning categories.

No: with very rare exceptions, boys and girls don’t learn differently.

No: introverts and extroverts don’t learn differently. (They don’t really exist. We’re all both, depending on the circumstances.)

No: we don’t have learning styles.

Here’s my advice:

Whenever a professed expert suggests you to divide students into different learning categories, assume those categories aren’t valid. Each of us learns our own way.

In a pithy sentence:

You are a learning style of one.

Replacing False Learning Categories with True Ones

That feel-good summary brings us back to the same problem. If each of my students learns differently, then I need to create 30 lesson plans. What to do?

Here’s the good news:

Although we all learn differently, we resemble each other more than we differ.

We all use working memory to learn. When teachers prevent working-memory overload, we benefit all our students. (Including the “introverts” and the “ENTJs.”)

We all use attention to learn. When teachers learn about alertness, orienting, and executive attention, we benefit all our students. (Including the “auditory learners” and the boys.)

Long-term memories form the same way for us all. Spacing, interleaving, and retrieval practice help (almost) all of us learn (almost) everything. (Yup: including the “abstract learners.”)

And so: teachers don’t need to pigeon-hole our students into particular learning categories.

Instead, we can focus on categories of cognitive function. The more we learn about the mental processes that enhance (or inhibit) learning, the more we truly benefit all of our students.

Vital Resources in Psychology: the Best Research for Teachers
Andrew Watson
Andrew Watson

vital resources in psychologyOver the last ten years, I’ve found many articles and studies that I return to frequently.  Some summarize lots of research suggestions. Others explore particular questions with verve and clarity.

I hope you enjoy these as much as I do.

Vital Resources in Psychology: Big Lists

Our students often confuse PERFORMANCE (a high score on a test) with LEARNING (enduring knowledge and skill). Nick Soderstrom sorts through all kinds of evidence to help teachers distinguish between the two. Helpfully, he includes evidence for both physical and cognitive learning.

Learning versus Performance: An Integrative Review, by Nick Soderstrom and Robert Bjork

This comprehensive (!) article examines research behind ten well-known teaching practices: from underlining to retrieval practice. In each case, it looks at the quality of evidence. It then helps you choose those that fit your subject and your students best. (Danger: several sacred oxen gored here.)

Improving Students’ Learning with Effective Learning Techniques, by John Dunlosky (and many others)

Deans for Impact have boiled their suggestions to a list of six. You’ve got everything here from motivation to transfer. It also offers a solid list of sources when you want to check out the primary research.

The Science of Learning, by Deans for Impact

Vital Resources: Enlightening Studies

Regular readers of this blog know that “retrieval practice” helps students learn MUCH more effectively than simple review does. In brief: don’t have students reread a chapter. Have them quiz each other on the chapter. This kind of active recall fosters new learning. In this splendid study, a researcher, a teacher, and a principal move this finding out of the psychology lab and into the classroom.

The Value of Applied Research: Retrieval Practice Improves Classroom Learning and Recommendations from a Teacher, a Principal, and a Scientist, by Agarwal, Bain, and Chamberlain

In this marvelous study, researchers wonder if testing students on material before they’ve even seen it might help them ultimately learn it better. Here’s the fun part: when their first study suggests the answer is “yes,” they then repeat the study four more times in an attempt to prove themselves wrong.  Only when they can’t come up with any other explanations for their findings do they finally persuade themselves.

The Pretesting Effect: Do Unsuccessful Retrieval Attempts Enhance Learning?, by Richland, Kornell, and Kau

 

 

Alcohol and Learning: Does Drinking Harm Memory?
Andrew Watson
Andrew Watson

Back in October, I published one of the blog’s most popular articles: a summary of a study showing that moderate drinking benefits memory.alcohol and learning

In brief, that study showed that drinking before learning muddled memories. However, moderate alcohol after learning produced a modest but clear benefit.

You can understand why this research proved such a hit among teachers.

Bottoms up!

More About Alcohol and Learning

Back in December, Olga Khazan published an article in the Atlantic summarizing several studies about the effects of alcohol on memory. Alas, her take on the literature sees more bad news than good.

Most tellingly, she focuses on a study in Britain that tracks participants’ health over time. The short version of the findings: more alcohol meant a smaller hippocampus. And, generally speaking, a healthy hippocampus helps us form declarative memories.

This study also looked at participants’ ability to generate words. (It’s a test called “lexical fluency.”) Here again, even moderate alcohol intake meant that — over time — people had a harder time with this particular test.

Alcohol and Learning: Not All Bad News

Any complex study produces complex results, and this one is no exception.

First, although “lexical fluency” declined over time as a result of alcohol, there was no correlation between alcohol consumption and cognitive ability as measured by multiple tests at the time of the study.

In other words: that one particular mental ability declined, but that didn’t mean all of them did.

Also: the decline in lexical fluency was significant for men, but not women. (I suspect that 51% of you are happy to read that fact.)

Putting It All Together, with a Cozy Glass of Wine

We would, of course, love to have a clear understanding of alcohol’s relationship to learning. And, to brain health. And, to health overall.

Unfortunately, there are too many variables, and too many ways to measure them, for a simple answer.

I myself take medical advice from my doctor, not the interwebs. And, although I don’t drink wine because it might help me learn more, I do enjoy a nice Napa Cab on a rainy Boston evening.