Sunday, April 14, 2024

THINKER'S ALMANAC - April 15

Why are the hyphens in phone numbers just as important as the numbers themselves?


Subject:  Memory - The Magic Number Seven

Event:  George Miller’s paper “The Magic Number Seven, Plus or Minus Two:  Some Limits on Our Capacity for Processing Information” is published, 1955


And finally, what about the magical number seven? What about the seven wonders of the world, the seven seas, the seven deadly sins, the seven daughters of Atlas in the Pleiades, the seven ages of man, the seven levels of hell, the seven primary colors, the seven notes of the musical scale, and the seven days of the week? What about the seven-point rating scale, the seven categories for absolute judgment, the seven objects in the span of attention, and the seven digits in the span of immediate memory? For the present, I propose to withhold judgment. Perhaps there is something deep and profound behind all these sevens, something just calling out for us to discover it. But I suspect that it is only a pernicious, Pythagorean coincidence. -George Miller (1)


Have you ever wondered why phone numbers have hyphens? What is the difference between 206-333-2435 and 2063332435?  The answer relates to the capacity we have to store short-term memories.  In a landmark study published on this day in 1955, psychologist George Miller (1920-2012) determined that when it comes to short-term memory capacity, seven is the magic number.  In other words, our working memory seems to be limited to no more than seven objects. The magic of the hyphen in a telephone number, therefore, is that it allows us to “chunk” numbers together in groups in order to expand our capacity to remember them.



                                                                        Image by JL G from Pixabay 


Miller’s work with memory built on the pioneering research of Herbert Ebbinghaus, who established what we know today as the forgetting curve (See THINKER’S ALMANAC - January 19).  Like water in a glass, our memories evaporate quickly if we don’t make some effort to keep them.  Ebbinghaus used himself as a subject, memorizing hundreds of three-letter nonsense words.  Doing this, he established the keys to hacking our memories:  spaced repetition and retrieval practice.  If you want a memory to move from short-term to long-term memory and stay there, you must practice recalling it numerous times over a long period of time, including recall before and after periods of sleep.


Miller’s work dealt primarily with the capacity of our working (short-term) memories. Although our working memories have limits, we can extend these limits by chunking the information and organizing it into recognizable patterns.


For example, imagine you were trying to remember the following string of 13 letters:  SRIASANAICIBF.  Normally your working memory would be exhausted at about seven letters, but you might extend this capacity by organizing the letters into recognizable chunks:  FBI-CIA-NASA-IRS.  Now instead of 13 separate items, we have just four recognizable and easy-to-remember items.


More than just a strategy for remembering letters or numbers, chunking is a strategy for organizing ideas and information.  When taking in a lot of information, look for ways that you might chunk it into different categories.  Not only does this make the information easier to remember, but it also helps us engage our imaginations as well as our memories to creatively interact with what we’re learning.  Likewise, if you are presenting information, consider your audience’s ability to take in information, and try to chunk it in a way that logically makes sense.


Recall, Recite, Retrieve, Ruminate, Reflect, Reason: Why did George Miller consider seven the magic number? What is chunking?



Challenge  - Chunk the Muses: It was the Greek playwright Aeschylus who said that “Memory is the mother of all wisdom.”  In Greek mythology, Mnemosyne, the goddess of memory, was the mother of the nine Muses who inspired human creativity.  Do a bit of research on the Muses, and try to memorize the names and providence of each one.  Also, try to employ some chunking to make your task more manageable.


ALSO ON THIS DAY:


April 15 (each year):  Today is the deadline for a delightful contest for deplorable writing:  The Bulwer-Lytton Fiction Contest (BLFC), where entrants face the challenge of writing the worst possible opening sentence to a novel.  The contest began in 1982, created by Scott Rice of the San Jose State University English Department.  The contest’s namesake is the prolific Victorian novelist Edward Bulwer-Lytton (1803-1873), a writer whose writing was known for its melodramatic flair.  Here, for example, is the opening sentence from his novel Paul Clifford (1830):


It was a dark and stormy night; the rain fell in torrents—except at occasional intervals, when it was checked by a violent gust of wind which swept up the streets (for it is in London that our scene lies), rattling along the housetops, and fiercely agitating the scanty flame of the lamps that struggled against the darkness.


-April 15, 1985:  On this day the American poet Donald Hall published an article in Newsweek, arguing for a revival of what he called the “Out-loud Culture,” a time when the average American was more literate because of the popularity of reading and reciting aloud:  See THINKER’S ALMANAC - September 20.

-April 15, 2013:  On this day Time magazine published “Practice, Made Perfect?” The article profiles Dan McLaughlin, a commercial photographer who was attempting to qualify for the Professional Golfing Tour.


Source:

1-“The Magical Number Seven, Plus or Minus Two: Some Limits on Our Capacity for Processing InformationOffsite Link," Psychological Review, Vol. 63, No. 2, 81-97. 

2-“George Miller Publishes ‘The Magical Number Seven, Plus or Minus Two. . . ‘“ History of Information.com


No comments:

Post a Comment

THINKER'S ALMANAC - January 31

What is one trick that marketers use to make things appear true even though they are not necessarily valid? Subject:  Cognitive Fluency - Ea...