Knowing Your Brain: Memory Mechanisms & IQ Training
Friday, June 27th, 2008
“The best test of truth is the power of the thought to get itself accepted in the competition of the market,†Supreme Court Justice Oliver Wendell Holmes (1919).
Nearly 90 years after Oliver Wendell Holmes cast the fortunes of truth onto the open market, Sam Wang and Sandra Aamodt write that the processes by which we form memories aren’t as egalitarian as Holmes would have liked to think.
Deposited first in the hippocampus, pieces of information get drawn down and reprocessed each time we recall them. Once we’ve recalled them several times, the brain has written them to the cerebral cortex, weakening or severing the connection to the source of the information. And so, as researchers have now shown, we have ’source amnesia,’ an explanation (apart from stupidity) for why people still believe falsehoods to be true even after those falsehoods have been debunked. (Kerry and the Swift Boat smears, Obama and his religion…)
I’m intrigued as to why memory functions in this way:
As the human mind evolved it needed to be able to process and recall information. Some of this information would have been ultimately disposable, but very important and highly context sensitive (’I should stay clear of this part of the forest because I heard a bear growling here five minutes ago.’) Having a holding area like the hippocampus would allow us to store a lot of temporary data, much of which would be used briefly in a focused way, then let go.
Then there would be another class of information that we would need to recall over and again (’Red berries make you sick,’) without the fuss of recalling the context — this becomes the ‘rule set’ by which we live.
This second class of information can help us live safely and effectively. We build up our rule set and stick to it. And, if we’ve processed the original information correctly, the rule set will tend to do well by us. But, as Wang and Aamodt point out, when we’re misinformed or when we don’t process the original information correctly, or when lies get repeated often enough without a conscious internal effort to contradict or doubt, we end up believing falsehoods. Their advice: to be conscious about what we believe and contemplate the reverse.
And giving new hope to those who want to be able to process any information more effectively, researchers have found new evidence that we can change the way our brains work for the better. Back in April, several journalists (see below) wrote about research by a team from the Universities of Michigan and Bern that showed that memory training can increase fluid intelligence. The research adds to the growing body of data that the structure and makeup of the brain is more plastic than we used to think.
Although there are already several products on the market that purport to sharpen or improve brain power, the research results of the team from Michigan and Bern seemed so exciting and compelling that I decided to produce an affordable commercial software program that would allow anyone to benefit from the training at home. So today I’m blogging about my own news… You can now purchase the IQ Training Program for the paltry (in comparison to its value) sum of $23.75.
Brain Training Research In The News…
Forget Brain Age: Researchers Develop Software That Makes You Smarter
“…a method for improving the general problem-solving ability scientists call fluid intelligence, otherwise known as “smarts.”
“If you’re looking for an intellectual picker-upper that doesn’t come in a pill, remember this: A relatively brief memory-training program jump-starts general reasoning skills and problem-solving proficiency…”
Memory Training Shown to Turn Up Brain Power
“A new study has found that it may be possible to train people to be more intelligent, increasing the brainpower they had at birth.”
Related posts from around the web…
Executive function training - does it transfer? - Post regarding reported transfer effects (to Gf) from working memory training tasks generated a number of posted comments (go to link and see original post plus comments). Today Developing Intelligence has a nice critique …
ScienceDaily Links - … stuck with IQs set by their genes at birth? Until recently, nature seemed to be the clear winner over nurture. But new research suggests that at least one aspect of a person’s IQ can be improved by training a certain type of memory.
Music & Intelligence: Will Listening to Music Make You Smarter? - In a study conducted by Dr. Timo Krings and reported in Neuroscience Letters in 2000, pianists and non-musicians of the same age and sex were required to perform complex sequences of finger movements. The non-musicians were able to make …
ScienceDaily Health Headlines — for Friday, June 27, 2008 - Low Childhood IQ Linked To Type Of Dementia (June 26, 2008) — Children with lower IQs are more likely decades later to develop vascular dementia than children with high IQs, according to new research in Neurology.
The Brain Improvement & IQ Newsletter – June 1-2, 2008 from http … - Dr. Simon Evans holds a Ph.D. in molecular biology with 15 years research and teaching experience in neuroscience, and is a current faculty position in the Psychiatry Department at the University of Michigan. …


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