Saturday, April 30, 2016
First, the facts: Common Core (CC) is not working, as measured by its own standards and metrics. After seven years of implementation in 40 states, Associated Press now summarizes the National Report Card that reveals that two-thirds of graduating seniors are not ready for college. Seventy-five percent failed the math test and sixty-three percent failed the reading test.
These dismal findings are no surprise, as we get similar reports every year during CC's reign. Everybody seems to have an explanation, which too often is an excuse—like we don't spend enough money on schools. That conclusion is easily refuted by extensive documentation, and I won't take the time to rehash that evidence here. But let's look at some possible explanations that are widely shared and perhaps real:
Teaching to the Test. The problem with CC is not so much with its standards but with the testing regimen that has been captured by two publishing houses. The federal government education bureaucrats ("educrats") have turned schools into test factories for CC-based testing. In other areas of politics, we would call that crony capitalism. The focus of teaching in many schools is to teach students to pass multiple-choice tests limited to specific standards in only two areas, math and English. In the old days, we practiced learning the multiplication tables; today, kids practice taking tests—again and again. If teaching to the test worked, maybe we could endorse the practice. But it clearly doesn't work. Why? This leads us to other explanations.
One Size Fits All. Federal educrats treat our hugely heterogeneous population as if it were homogeneous. If you live in the Southwest, you know that this part of the country is largely Mexicanized, with huge numbers of students who don't even speak English. The country as a whole is a mixture of suburbia and ghettos. The government promotes multi-culturalism, while at the same time demands that our schools produce a cookie-cutter product. We have Red and Blue states that seem to be moving further apart. We have growing disparities in personal wealth, aspirations, and family structure. It is a fool's errand to think that one size fits all is the remedy for education.
Political Correctness. CC is notorious for its PC curriculum, which contains significant elements of anti-Americanism and leftist doctrine that have little to do with education. Moreover, for many students, such PC is demotivating. Kids do have a capacity for spotting when they are being manipulated by adults. They do not like it, especially when it is imposed in school.
State-centric versus Student-Centric Education. Students live in a different mental world than adults. Our standards of learning are not inherently theirs. Whatever it is we say they must learn has to be put in a context that is meaningful to them. Math, for example, taught as an isolated subject, has little attraction for most students, especially when the only purpose is to pass a federally mandated exam. However, when taught as a necessary component of a shop class or classes in other subjects, math acquires a relevance that even students can value. Language arts, when studied as an end itself, is hardly as motivating as when students learn it to accomplish their own purposes, like perhaps debating with peers, writing persuasive blogs and social media posts, or school publications. I think that educrats have forgotten what it is like to be a youngster.
Trashing Memorization. CC was designed to abandon the old emphasis on memorization and focus on teaching thinking skills. This is most evident in math instruction. Learning to think is of course admirable, but why then do we not see improvement on the tests designed to measure thinking skills? Do educrats not know that you think with what you know, and what you know is what you have memorized?
I have professor colleagues who criticize me for trying to be a "Memory Medic" and help students learn how to memorize more effectively. Teachers seem reluctant to teach memory skills, or maybe they don't know what the skills are. Even if teachers can teach such skills, their principals and superintendents set the demands that are focused on teaching to the test. Teaching learning skills these days is an alien concept.
What schools need to focus on is helping students to develop expertise in something. That may be in band, art, vocational classes, farm projects, or any area where skills are valued. CC does none of that. The real world needs and rewards expertise. Of course, experts can think well in their field of expertise. And why is that? They know their subject.
When a student memorizes information, she not only acquires subject-matter mastery but the personal knowledge of success. Nothing is more motivating than success. A student owns the success. Nobody can take that away. Federal exams remind students of their ignorance. And we expect that to be motivating?
When I went to school decades ago, school was fun, because I was learning cool stuff and nobody was on my back all year long to make the teacher and school to look good with my test scores. Today, a lot of kids hate school. I would too.
"Memory Medic" has three recent books on memory:
1. "Memory Power 101" (Skyhorse) - for a general audience at http://www.skyhorsepublishing.com/book/?GCOI=60239100060310http://www.skyhorsepublishing.com/book/?GCOI=60239100060310
2. "Improve Your Memory for a Healthy Brain. Memory Is the Canary in Your Brain's Coal Mine"- an inexpensive e-book for boomers and seniors in all formats at Smashwords.com, https://www.smashwords.com/books/view/496252https://www.smashwords.com/books/view/496252
3. "Better Grades, Less Effort" - an inexpensive e-book for students at Smashwords.com, https://www.smashwords.com/books/view/24623https://www.smashwords.com/books/view/24623
Tuesday, April 26, 2016
As explained in my memory-improvement book, "Memory Power 101," the most powerful way to remember something is to construct a mental-image representation. All the memory books I have read make the same point. The professional memorizers, "memory athletes" who can memory the sequence of four shuffled decks of cards in five minutes, all use some form of mental imaging that converts each card into a mental-picture representation.
Now a recent experiment documents the power of mental images in a study involving seven experiments that compared memory accuracy with whether or not a drawing was made. College-student volunteers were asked to memorize a list of words, each of which was chosen to be easily drawn. Words were presented one at a time on a video monitor and students were randomly prompted to write the name of the object or make a drawing of it. Each word presentation was timed and a warning buzzer indicated it was time to stop and get ready for the next word display. At the end of the list, a two-minute filler task was presented wherein each student classified 60 sound tones, selected at random, in terms of whether the frequency was low, medium, or high. Then a surprise test was given wherein students were asked to verbally recall in one minute as many words as they could, in any order, whether written or drawn.
In the first two experiments students remembered about twice as many when a drawing representation had been made than when just the word had been written. Three other experiments demonstrated that drawing was more effective because the encoding was deeper. For example, one experiment was conducted like the first two, but included a third condition in which the subjects were to write a list of the physical characteristics of the word (for example, for apple, one might say red, round, tasty, chewy, etc.). This presumably provides a deeper level of encoding than just writing or
Another highly important experiment was conducted that compared drawing and writing with just making a mental image without drawing it. Again, drawing produced the best results, although more words were remembered when mentally imaged than when written.
A follow-on experiment substituted an actual picture of the word instead of requiring the student to actively imagine an image. Here again, best results occurred with drawing, with seeing pictures being more effective than writing the word.
In a sixth experiment, drawing was still superior to writing even if the list of words was made longer or if the encoding time was reduced. In the last experiment, drawing was still beneficial in a way that could not be explained solely by the fact that drawings are more distinctive than writing a word.
The benefits of drawing were seen within and across individuals and across different conditions. The researchers concluded that drawing improves memory by encouraging a seamless integration of semantic, visual, and motor aspects of a memory trace. That makes sense to me.
The processes involved here that account for better memory are 1) elaborating the item to be remembered, 2) making a mental image of it or an alias for it, 3) the motor act of drawing the image, and 4) the reinforcing feedback of thinking about the drawing.
The implications of studies like this have enormous practical application for everyday needs to remember. The principle is that whenever you have something you need to remember, make a mental-image representation of it and then draw it. For example, if you have to remember somebody named "Mike" make a mental image of the person speaking into a microphone (mike). Then roughly draw Mike's main facial features alongside a microphone. There are all sorts of formal schemes for making mental images, even for numbers, as explained in my book. This present study indicates that the making of a mental image is powerfully reinforced when you try to draw it.
To some extent, this memory principle is used in elementary school, where drawing is a huge part of the curriculum. As students get older, teachers abandon drawing and usually so do the students. Perhaps educators need to revisit the idea that drawing has educational value at all grade levels.
Kluger, Jeffrey, (2016) Here's the memory trick that science says works. Time, April 22. http://time.com/4304589/memory-picture-draw/
Wammes, Jeffrey D. et al. (2016. The drawing effect: Evidence for reliable and robust memory benefits in free recall. The Quarterly Journal of Experimental Psychology. 69 (9), 1752-1776. DOI:10.1080/17470218.2015.1094494
Saturday, April 16, 2016
We all think with ideas and information that we hold in working memory. Working memory is like a scratch pad with a succession of content on the pad that is streamed into the brain's thinking apparatus. What is held on the working memory scratch pad is either retrieved from memory or inserted from real-time experience (like what you are reading or hearing).
Source: W. R. Klemm
So, how does organization apply? As the brain seeks information to put on the scratch pad, it has to know where it is. Thinking is slow at best and possibly incoherent if ideas and information are located in disorganized repositories (such as sticky notes, memos, documents located randomly in different places. How can anyone keep a stream of coherent thought going if there is constant interruption trying to find the note or document one needs at each stage of thinking?
The other thing is that working memory has very limited capacity. Thus, when accessing notes and documents to use in thinking, the content needs to be easily extractable in small chunks. Here is an example that we can all relate to. Congress seems wedded to producing omnibus bills of some 2,000 or more pages. Even if legislators read the entire bills, they couldn't digest the content in any coherent way because the bills are not designed for thinking. No surprise then that we end up with incoherent, ineffective, and even destructive legislation.
Common Sense Methods for Organizing. The underlying principle should be to have a place for everything and put everything in its place. Examples:
- Put important items (bills, car keys, purse, etc.) in their own same place.
- Put sticky note reminders in key places.
- Keep a calendar (but remember to check it each day).
- Get a file cabinet and label the files in the most meaningful ways.
- Have a tote bag or briefcase that always has in it what you need for the day.
Be proactive. If information of a given type accumulates over time, don't wait until the end to organize it. Organize as it goes along. For example, my federal tax information accumulates throughout the year. I don't wait until tax time to organize it. As bills, receipts, and the like come in during the year, I file them in file cabinet folders I have already set up for income tax return preparation. Come April, I can put all the information the tax accountant needs in a matter of a few minutes. And it reduces his time, which lowers my tax preparation bill.
Computer Methods. Computers give us access to enormous amounts of information. But the bad news is that the more information, the greater the need for good organization.
In the case of web-site addresses, most browsers have good systems for bookmarks, but after a couple years of saving bookmarks I find that I have not been sufficiently thoughtful as to how I set up folders and sub-folders.
For other kinds of information, the demand for organizational sophistication varies with the home and workplace workload. Here are a few, free, computer tools:
Tools that Synchronize Across Devices
- One-Note On-line is included in Microsoft Windows. It allows creation of separate notebooks, and labeled "pages" within each notebook that accept separately pasted items that can be dragged about the page.
- Evernote helps you keep all sorts of notes in topic-specific notebooks.
- Google Docs is like Evernote, but is document focused.
- Google Calendar helps you track events, set reminders, import appointments straight from Gmail, and is shareable.
- Remember the Milk is a "to-do" reminder. It has specific apps for the web and multiple portable devices and you can connect it to multiple devices. It syncs with Outlook or Google mail.
- TelePixie sends wake-up calls, reminders, and alerts to your mobile phone.
- Sticky Notes comes with Microsoft Windows and is a computer version of the paper sticky notes you put on the refrigerator, walls, and elsewhere. You can keep the notes open all the time on the computer desktop or temporarily closed.
- Stickies is a much more sophisticated system that runs on Windows. Unlike Sticky Notes which appear all at once on the desktop, Stickies notes are separately attached only to whatever document you are working on.
- Flashcards provides a simple way to create flashcards with the information you are trying to learn and drill yourself to help make it stick in your mind.
- WiseMapping is a mind mapping tool that provides you with an awesome way to keep notes in an organized fashion. Items in the map can have attached text commentary. Maps can be shared and exported in multiple formats.
Readers wanting to know more about how the brain works may be interested in Dr. Bill's recent book, Mental Biology (Prometheus).
Saturday, March 12, 2016
The title sounds outrageous. But supporting data comes from research at the most prestigious Salk Institute. Other researchers had made enormous storage capacity estimates for brains, but this new estimate is 10 times greater. The estimate is on the order of petabytes, as much as the entire World Wide Web.
How does anybody come up with such estimates? What is the basic premise? First, memory is quantified in terms of number of bits of information that can be stored and recovered. In the case of brain, the question is how much information can be stored in a synapse, the communicating junction between neurons. Size and operational strength of a synapse are the key variables: strength can be measured in bits and strengths correlate with umber and size synaptic size. Under high magnification, synapses look like a bunch of beads on a string. The newborn brain, there are relatively few “beads,” but these increase in number and size as the baby grows and learns things. Sadly, in old age, many of these beads disappear unless the brain is kept very active.
In the Salk study of rat brains, electron micrographs of the memory-forming structure, the hippocampus, allowed 3-D reconstruction and detection of the diameters of synapses, which are the target synaptic structures in neurons. Synaptic strength correlates with storage capacity, and the strength is measured by the size of synapses, which appear as a round bead attached to a stalk or neck to the supporting neuronal membrane. The size of the bead varies with synaptic strength because synaptic strength is created by more molecular machinery for mediating synaptic communication. Thus, spine bead size is a proxy for synaptic strength and storage capacity.
The investigators found that a small cube of brain tissue contained 26 different bead sizes, each associated with a distinct synaptic strength. The authors state that this equates to an approximate 4.7 bits of information at each synapse. Multiply 4.7 times the trillions of synapses and neurons in the brain and you get phenomenal storage capacity.
While I marvel at the elegant complexity of these research methods, I think the interpretations are a bit simplistic. There are some caveats that the authors overlooked. For one, an assumption is made that that the number of storage bits equals the logarithm of the number of bead sizes. The “bit” is a unit of information in digital communications. Information theory holds that one bit is the probability of a binary random variable that is 0 or 1, or more loosely defined as present or absent. One has to take some liberties to apply this concept to memory storage in brain, because the brain is not a digital computer. It is an analog biological computer.
Then there is the problem that the hippocampus deals only with forming declarative and episodic memories, not procedural memories like touch typing or playing the piano. Thus, the storage capacity, whatever it is, is not estimated for procedural memories. Secondly, declarative and episodic memories are not stored in the hippocampus, but rather stored in a distributed fashion throughout the brain. Since synaptic measures were made only on hippocampal tissue, there are no data for the rest of the brain.
But there is a larger issue. How does one know how many bits it takes to represent different memories? Not all memories are the same and surely they don't all require the same number of storage bits.
Actually, the exact number of bits of information that brains can store is rather irrelevant. By any measure, common experience teaches that nobody utilizes all their memory capacity. Moreover, the amount of information a given person stores varies profoundly depending on such variables as motivation to remember things, use of mnemonics, and level of education. The question that needs answering, given that we have vast amounts of unused storage capacity, is "Why don't we remember more than we do?" Books like my Memory Power 101 provide some practical answers.
Bartol, Thomas M. et al. (2015). Neuroconnectomic upper bound on the variability of synaptic plasticity. eLIfe. Nov. 30. http://dx.doi.org/10.7554/eLife.10778
Tuesday, February 16, 2016
An area of controversy in the life sciences relates to the relative roles of genetics and the environment. Confusion commonly afflicts politics. For example, early Communists glommed on to the discredited genetic theory of “inheritance of acquired characteristics.” This theory holds that changing a person’s attitude and behavior would somehow result in changes to his or her genes, which would allow for genetic transmission of the changed attitudes and behavior to his or her children. For this idea to be true, outside influences on the brain would have to change the genes not only in brains but also in the sex cells (sperm and egg cells). The idea was held in ancient times by Hippocrates and Aristotle, but it gained scholarly imprimatur with formal publication in 1809 by Jean-Baptiste Lamarck. In the 1930s, the Russian president of the Soviet Academy of Agricultural Sciences, Trofim Lysenko, applied the doctrine to Soviet agriculture with disastrous results. At the same time, Soviet political leaders extended the mistaken doctrine to inheritance of educational and social experiences; that is, changing human nature by government policy. They expected that indoctrinating the current generation in collectivism would genetically transfer collectivist attitudes and behavior to all future generations. Cuba, North Korea, and China showed that collectivism can be transferred culturally but not biologically.
In the United States, much political angst arises from disputes over whether more effective educational and social policies will succeed in lifting people out of poverty and dysfunctional behaviors. When I was a child, I often heard the axiom, “You can take the boy out of the country, but you can’t take the country out of the boy.” Today, the corresponding axiom would seem to be, “You can take the boy out of the ghetto, but you can’t take the ghetto out of the boy.” The reality is that you can take the country or ghetto out of the boy, but this won’t transfer to his children by his genes.
What we are now discovering is that environment and experience affect the expression of genes. Whether or not genes are accessible for readout often depends on the environment. People have underestimated their capacity to sculpt their own brains, attitudes, and behavior by controlling experiences that affect gene expression. However, though people may control to some extent how their own genes are expressed, there won’t be any biological transfer to their heirs. Environmental and cultural influences do of course transfer, so one’s heirs can be taught how to likewise exert control over how their genes are expressed.
Having the right chemicals in the right environment at the right time is believed by most scientists to be all that is needed for creating life and shaping the mental life of the individual. To them, life seems like a highly improbable occurrence. But it did happen, and even more improbable, there may be a life force that sustains it.
Many scientists also think of the brain’s conscious mind as an emergent property of brain function. Emergent properties follow the rule that the whole is greater than the sum of its parts. Another way of saying this is that the properties of the whole cannot be predicted from what you know about the properties of the contributing parts. Yet, paradoxically, most scientists believe that as they learn more and more about less and less, they will somehow explain the whole.
Emergent properties apply both to molecules in a primordial soup that generate simple living organisms and to the 100 billion or so neurons of a human brain that generate a conscious mind. A physical world that can generate emergent properties is a mysterious and magical world indeed.
What gets left out in such consideration is the capacity for personal control over one’s biology, which is an important theme of this book. I contend that at the level of the individual person, mind itself—especially conscious mind—is a major force of natural selection that drives creation of mental capacity and character. To make that case, I will explain as simply as I can what neuroscientists know about how the brain works (chapter 2). Other books that discuss brain do so as if knowing how the brain works is an end in itself. I focus on the implications of such knowledge. Then I try to explain what consciousness is, what causes it, and its various states (chapter 3). Most importantly, in chapter 4, I challenge the position of many fellow neuroscientists who hold that consciousness is only an “observer” that cannot do anything, much less generate what we commonly call “free will.”
The implications for daily living could not be more profound. Accepting one’s biology and circumstance breeds helplessness and fatalism. So, it boils down to one’s belief system. Either you are “captain of your own ship, master of your own fate,” or you are shackled by the belief that change is not possible. Are we victims of biology and fate? This book will show both how the brain shapes its own destiny and how what you think and do shapes brain function.
Excerpted from Mental Biology. The New Science of How the Brain and Mind Relate, by W. R. Klemm. New York: Prometheus. See rave reviews at WRKlemm.com, click on "author."
Wednesday, February 03, 2016
The human brain contains a distinct network that serves as its executive agent. This network is primarily based in the dorsolateral prefrontal, parietal, and cingulate cortices. It regulates the many “top down” neurobehavioral functions that are so characteristic of human brain. Deficiencies in the function of this network underlie numerous neuropsychiatric conditions, but even underlie much of the failings of us all. The ability to regulate emotions and direct rational actions is typically associated with success in life, and inability to do so often leads to dire consequences.
This network can be trained to develop more robust capacity for executive control. This, as we all experience, is what parenting and schooling are about. Such training is especially crucial in early childhood when the challenges of school are first encountered. Even so, such training takes many years and for most of us may never be completed.
The question arises: can such executive control training be expedited? One possibility has recently arisen from several studies showing that working memory capacity can be expanded by a relatively short training time, and in the process general intelligence may be improved. Since the same system that determines intelligence is also operative in executive control, it seems reasonable that working memory training might also enhance executive control. To pursue this possibility in a specific context, researchers have hypothesized that inappropriate or maladaptive behaviors might be reduced by effective working memory training based on emotion-laded stimuli.
In a study by Suaznne Schweizer and colleagues in England, subjects in their early 20s were assessed for emotional control before and after 20 training days of 20-30 minute sessions. The experimental groups received dual n-back training with a simultaneously presented face and a word that was either emotionally negative or neutral. After each picture-word pair, subjects were to press a button to indicate if either or both members of the pair matched the stimulus presented n-positions back. Tests began with n = 1 and increased as subjects gain proficiency.
Not surprisingly, errors in both trained and untrained subjects increased at levels beyond n = 1, and the error rate was comparable for both groups. Results also indicated that subjects reported less distress when they consciously willed to suppress the distress compared with the null state of just attending to negative stimuli. But this distress reduction occurred only in the emotional working memory training group.
No change in neural activity levels was indicated in brain scans as a result of placebo training, but significant increases occurred in the executive control regions of interest as a result of emotional working memory training, irrespective of the level of n-back achievement.
The study also compared emotional responsivity before and after training. Subjects were asked to just pay attention or to pay attention and cognitively suppress their emotional reaction. Subjects rated their emotions on a numerical scale from negative to positive while viewing films that were emotionally neutral (such as weather forecasts) or that were emotionally disturbing (such as war scenes, accidents, etc.). Training caused no change in the group that viewed only neutral images, but in the groups viewing disturbing scenes, training decreased the perceived distress in a group told just to attend the scenes and was even more effective in the group told to suppress emotional reaction.
The emotional working memory training produced benefits that transferred to the emotional response task. Trained subjects not only regulated their emotions better but also developed greater brain-scan activity during the emotional task in the predicted brain regions of interest, the executive control loci. In other words, the training actually changed brain function on a lasting basis. Traditionally, we have always thought that the sole benefit of n-back memory training is to expand the amount of information that can be held in working memory. But now we see that such training can improve our ability to control emotions. Emotional working memory training improves the ability to suppress disturbing emotional responses and does so presumably because the executive control network is more activated. Thus, such training might also enhance many executive control functions, particularly responses to emotionally disturbing circumstances. A new tool for self-control may have been discovered.
Banich, M. T., Mackiewicz, K. L., Depue, B. E., Whitmer, A. J., Miller, G. A. , Heller, W. (2009) Cognitive control mechanisms, emotions and memory: a neural perspective with implications for psychopathology. Neurosci. Biobehav. Rev. 33, 613-630.
Beck, A. T. (2008) The evolution of the cognitive model of depression and its neurobiological correlates. Am. J. Psychiatry. 165, 969-977.
Schweizer, S., Grahn, J., Hampshire, A., Mobbs, D., and Dalgleish, T. (2013). Training the emotional brain: improving affective control through emotional working memory training. J. Neurosci. 33(12), 5301-5311.
Readers of this column can learn more about n-back training and numerous other ways to improve brain function in "Memory Medic's" e-book, Improve Your Memory for a Healthy Brain. For a limited time only, this book is priced at 99 cents, available in all formats from Smashwords.com.
Monday, January 11, 2016
In recent years, the growing public concern over deficiencies of schools has led a growing number of educations to embrace neuroscience. Neuroscience is a discipline that integrates anatomy, physiology, psychology, psychiatry, pathology as they relate to function of the nervous system, particularly the brain. In 1969, I was one of 500 charter members of the society that formalized the discipline, the Society for Neuroscience. But only in the last decade has there been much interest in the potential for neuroscience to influence educational policy and practice.
In educational circles, this interest has been expressed with such terms as "brain-based learning," "educational neuroscience," and "neuro-education." The latter term is used for my Linked-in group. Whatever it ends up being called, a new discipline is growing. So far, both good and bad effects are manifest.
Numerous critics have pointed out that neuroscience has not had much impact on education, and worse yet has spawned a series of harmful myths. The myths arise frequently from well-meaning people who have misunderstood and misapplied the findings of neuroscience. Sometimes, the myths come from zealous neuroscientists who make false claims and promises. More often, the myths come from educators who lack scientific training.
A recent review has identified some of the more flagrant myths. Some beliefs are downright foolish and have no research-based evidence. For example, there is the false (and untestable) claim that we only use 10% of our brain. I have no idea where this absurdity arose, but surely it was not from a professional neuroscientist. But one very prominent scientist, whom I do not wish to embarrass, made an outrageous claim that 95% of everything humans do is programmed and that basically we have no free will to improve ourselves or do anything else. I challenge this idea that free will is an illusion in my new book, now in the page-proof stage. The existence of free will is essential for an ability to take personal responsibility and be held accountable for one's beliefs, thoughts, and actions. Belief that free will is an illusion is demotivating, leading children to think they are irredeemable victims of their biology and environment. Neuroscience research clearly establishes that the brain is readily changed by one's choices of experience, thought, and behavior. Freedom to make beneficial choices is empowering.
Another myth, not likely attributable to a scientist, is the claim that the brain shrinks if a child drinks less than six glasses of water each day and that this will cause children to underperform in school.
Such myths have led some critics to charge that neuroscience hype is destructive of sound educational practice. In some cases, that charge is justified. For example, some neuroscientists and educators have believed that children have differing learning styles and that teachers need to adjust teaching to accommodate visual, auditory, and kinesthetic learners. But controlled laboratory studies fail to confirm such biological differences among children. Yet belief in individualized learning styles is still believed by over 93-97% of teachers in five surveyed countries (U.K., China, Netherlands, Turkey, Greece). In those same countries, 71-91% of teachers believe, without evidence, that individual differences among learners are explained by differences in right-brain/left-brain dominance.
Many educators oppose IQ tests, presumably because the score differentials discriminatively label capability. This has given rise to the notion of "multiple intelligences," which is an untestable hypothesis because of the uncontrolled variables involved in defining the types and number of intelligences. There is also a common belief that IQ is fixed and unchangeable, yet evidence to the contrary is abundant.
Another mistaken belief is that the early ages of 0-3 years old are a critical period wherein most brain development occurs. There is no supporting evidence, and a vast amount of evidence shows that the brain is in continual development throughout life, even possible in old age. Brain development and learning capabilities develop at different rates and times in different people.
Nonetheless, a belief in the special importance of pre-K seems to be growing, even though there are indications that some kinds of instruction, such as reading, achieve better success when they are delayed. In Finland, noted for its excellence in education, teaching policy aims at delaying didactic education; "pre-school" education begins at age 6. Their kindergarten day lasts only four hours and is filled mostly with play time and social activities. Teaching of reading may not begin until age 7. Yet, in the U.S., Common Core standards require rigorous language training in kindergarten. There is no evidence that children who are taught to read in kindergarten have any long-term benefit from the early exposure. Likewise, the latest evidence shows that "Head-start" programs have no lasting impact, yet there is great public support for creating pre-Head Start programs.
Two common learning disabilities, ADHD and dyslexia, have been widely studied, both by educators and neuroscientists. Unfortunately, confusion abounds. In the case of ADHD, there is belief that it has to be treated with drugs and that it cannot be reduced by teaching or behavioral therapy. Myths have surrounded dyslexia, ranging from ideas that it does not exist to treatments based on the false notion that it was caused by a visual perception deficit. The real cause seems to be a problem with phonological coding.
As with any new scholarly discipline, a degree of misunderstanding and hype should be expected with educational neuroscience. The proper perspective is to be wary of false prophets and snake oil, but open to the possibility that new knowledge in neuroscience has genuine potential for enriching education practice and outcomes. Research on the biology of memory, reviewed in one of my books, has clear beneficial potential for education that has not been exploited. Better and more informed interdisciplinary collaboration is needed if we wish neuroscience to enrich rather than mislead education.
1. Howard-Jones, Paul. A. (2014). Neuroscience and education: myths and messages. Nature Reviews. Neuroscience. 15, 817-824.
2. History of SFN, 1969-1995. https://www.sfn.org/about/history-of-sfn/the-creation-of-neuroscience/establishing-the-society-for-neuroscience
3. Neuro-education: promoting cognitive development. https://www.linkedin.com/groups/4883556
4. Walker, Tim. (2015). The joyful, illiterate kindergartners of Finland. http://www.theatlantic.com/education/archive/2015/10/the-joyful-illiterate-kindergartners-of-finland/408325/
5. Klemm, W. R. (2016). Making a Scientific Case for Free Will. New York: Elsevier. In press.
6. Klemm, W. R. (2012). Memory Power 101. New York: Skyhorse.
Friday, January 01, 2016
Most of us remember early school years where we were taught the memory trick of turning item names into a song. Lyrical rhymes seemed to help. In fact, one common mnemonic peg system uses rhyme to create numerical image pegs to which we can attach mental images of what we want to remember. The pegs are expressed, for example, for one as one/run, for two as two/zoo, for three as three/tree, and so on. Though I think there is a better number peg system, this one does show the power of rhyming.
While this approach works, it applies mostly to lists of items. However, I did once use a version of it to put on a stage show where I memorized the gist of a magazine content, by page number. While this is good memory exercise, it does not apply well for memorizing complicated concepts, as one might occur in academic courses in college.
I get the impression from my college students that the vast majority of them study while listening to music. They say it helps them learn. But formal research on this matter is not clear. It is clear that music has rich structure (melodies, chords, themes, riffs, rhythms) that engages the entire brain in ways that certainly could be distracting. But music can also have strong emotional power for evoking emotions and moods. All I have learned about memory is that the most common memory problems come from interfering stimuli. Certainly, music with lyrics can be quite distracting if you are listening to the lyrics while trying to memorize school work. Rap music would probably create the most interference of all.
Finally, a recent scholarly research study, prompted by conflicting reports on music effects on memory, was based on the premise that music, if it could be helpful at all, would be instrumental music. In this study, 20 young non-musician adults were asked to memorize different lists of words presented while they listened to instrumental music, the sound of a waterfall, or silence. Pre-tests established that the chosen song and the environmental sound were rated as enjoyable, of medium emotional intensity, and low arousal effect. Results revealed better recall under the music condition than either of the other two conditions. However, the degree of improvement was small, albeit statistically significant.
Another study that I reported in another blog post tested the role of music on memory in the elderly. The subjects were not musicians and had an average age of 69 years. The music test conditions were: 1) no music control, 2) white noise control, 3) a Mozart recording, and 4) a Mahler recording. All 65 subjects were tested in counter-balanced order in all four categories. The music was played at modest volume as background before and during performance of the cognitive tasks, two memory tasks and a mental processing speed task. An episodic memory task involved trying to recall a list of 15 words immediately after a two-minute study period. A semantic memory task involved word fluency in which subjects wrote as many words as they could think of beginning with three letters of the alphabet.
Episodic memory performance was better when listening to either type of music than while hearing white noise or no music. No memory difference was noted between the two types of music.
Semantic memory was better for both kinds of music than with white noise and better with Mozart that with no music. Processing speed performance was faster while listening to Mozart than with the Mahler or white noise conditions. No improvement in the Mahler condition was seen over white noise or no music.
Recognizing that emotions could be a relevant factor, the experimenters analyzed a mood questionnaire comparing the two music conditions with white noise. Mozart generated higher happiness indicators than did Mahler or white noise. Mahler was rated more sad than Mozart and comparable to white noise. Thus, happy, but not sad, music correlated with increased processing speed. The researchers speculated that happy subjects were more alert.
Surprisingly, both happy and sad music enhanced both kinds of memory over the white noise or silence condition. But it is not clear if this observation is generally applicable. The authors did mention without emphasis that the both kinds of music were instrumental and lacked loudness or lyrics that could have been distracting and thus impair memory. I think this point is substantial. When lyrics are present, the brain is dragged into trying to hear the words and thinking about their meaning. These thought processes would surely interfere with trying to memorize new information or recall previous learned material.
A point not considered at all in either study is personal preference for a certain types of music. The music in the most recent study was lyric-free "Down, Down, Down." This is certainly not classical music, and the version I heard on U Tube is more rock than jazz. In the earlier study that used classical music, we cannot assume that all of the 65 people like classical music. If one does not like a certain type of music, it is not pleasurable and most likely is a major irritant and distraction from whatever it is that needs to be memorized. My point is that studies of music and memory need to take into account whether the subjects were allowed to hear their preferred music.
My take-home lesson was actually formed over five decades ago when I listened to jazz background music while plowing my way through memorizing a veterinary medical curriculum. When I was a student, I listened to instrumental jazz and was convinced that it helped me learn. Two possible explanations come to mind: 1) it helped me relax and feel good, and positive emotions are proven to help memory, or 2) perhaps my brain was energized by the creativity and rhythms of jazz. At the time, I thought that the benefit was stress reduction (veterinary school IS stressful and happy jazz certainly reduces stress). Now I consider the possibility that frequent listening to such music might have actually helped my memory capability in general.
Another point to emphasize is that background music probably interferes with memory in musicians. They are likely to attend to the music structure and technical performance, which would most certainly interfere with memorizing. My final advice: it you are not certain that background music helps studying, then think in silence. When it comes to learning, it is hard to beat intense focus.
Ferreri, L. Bigand, E., and Bugalska, A. (2015). The positive effect of music on source memory. Musicae Scientiae. 19 (4), 402-411.
Klemm, W. R. (2012). Music Effects on Cognitive Function of the Elderly. http://thankyoubrain.blogspot.com/2015/04/music-effects-on-cognitive-function-of.html
Klemm, W. R. (2012). Memory Power 101. New York: Skyhorse.