Tuesday, May 26, 2009

Who else thinks intelligence is genetic?

From New Scientist comes a very interesting article on the real nature of intelligence:

(read the original at → Confidence as important as IQ in exam success )

Do you think you’re smarter than most? Chances are, your children will feel the same way about themselves.

A new study of thousands of twins suggests that intellectual confidence is genetically inherited, and independent from actual intelligence.

Moreover, these genetic differences predict grades in school, says Tomas Chamorro-Premuzic, a psychologist at Goldsmiths University in London, whose team found that 7- to 10-year-old children who achieved the best marks in school tended to rate their own abilities highly, even after accounting for differences due to intelligence and environment.

Nature or nurture?

Psychologists have long known that intelligence isn’t the only predictor of scholastic achievement and that intellectual confidence does a good a job of predicting grades as well.

“There has been a very, very big lobby within educational psychology against the notion of IQ,” says Chamorro-Premuzic. “And part of this lobby has been based on the idea that self-perceptions matter more than actual ability.”

Most of these researchers assumed that environmental factors – the influence of parents, teachers and friends – explained why some students think more of their abilities than others.

That’s only partially true, says Chamorro-Premuzic. About half of differences in children’s self-perceived abilities can be explained by environment. The other half seems to be genetic.

‘Challenges convention’

Chamorro-Premuzic’s team drew this conclusion by comparing intelligence, grades and personal ratings of 1966 pairs of identical twins and 1877 pairs of non-identical or fraternal twins. Identical twins share nearly all their genes, while fraternal twins just half. This allowed researchers to calculate how much of the differences in intellectual confidence were due to genetic versus environmental factors.



My take:

I always believed that my good results at school had much more to do with my relative lack of pre-exam stress, than with actual “intelligence”. Many classmates of mine whose average performance was lower were actually just as intelligent, or more, than me, but had either self-confidence issues, or got nervous before tests.

Apparently, you might not be a genius, but the curious feedback loop the article above describes seems to boost your own ( and others’ ) confidence in your abilities, leading to great results which are then thought to be caused by a somewhat superior intelligence.

So, in the end it’s just perceived intelligence — which actually produces good results through a mix of a placebo effect, and a misconception about the nature and output of true intelligence (what is it, by the way?).

Add to that the popular perception that a grasp at a fair amount of factoids/trivia/popular culture (especially science-based) is somewhat indicative of intelligence (it merely indicates good memory, and perhaps curiosity, which may have a part in intelligence, indeed, but arguably less so than, say, raw logic reasoning power), and you have a recipe for a so-called genius / intelligent person, even though the potential actually exists for most people. This differs from the romantic view of innate talent that everyone seems to believe intelligence is.

Summing up:

  • The good news: Most people can be “intelligent”. As with most so-called “talents”, it can be worked up.
  • The bad news: You have to actually work on it. No geniuses are born knowing how to solve differential equations, or recursive integrals, or (insert math terms that make you look smart here)

So, what do you think?

Posted by Waldir Pimenta at 22:58:27 | Permalink | Comments (1) »

Tuesday, December 2, 2008

The Return of JavaSript

A few days ago a friend of mine was telling me he doesn’t get the reason for all the hype about JavaScript that has been in place recently. Even though I always considered JavaScript one of my favorite programming languages, I obviously acknowledged that it had lost some popularity after its original usage boom. And I had no ready answer to give him other than speculating about a possible fad cycle theory (many people talking about it after the first DHTML stuff, then most letting go of it simply cause they haven’t fully understood it — until someone came up with Ajax, and all the fuss was back, etc). But today I was reading an article that a contact of mine shared via Google Reader, and I think I might have found at least part of the answer:

“It will be interesting to see how Microsoft will improve IE for its cloud computing platform Windows Azure, when Firefox, Safari and Chrome already offer the technology to run JavaScript-heavy cloud services effectively.”
(…)
“The real problem with IE8 is that it completely missed the boat on the most important trend in browser development these days – JavaScript acceleration.”

Posted by Waldir Pimenta at 10:50:53 | Permalink | No Comments »

Saturday, November 29, 2008

inverse psychology?

“grow smaller” - 85,200 results
“shrink smaller” - 3,260 results

why???

Posted by Waldir Pimenta at 22:37:23 | Permalink | No Comments »

Tuesday, November 18, 2008

Ignorance

If you think that “ignorant” is a pejorative term, then you are an ignorant. Go look the word up in a dictionary.

(adapted from) Erann Gat in How I Lost My Faith in Lisp

Posted by Waldir Pimenta at 23:11:06 | Permalink | No Comments »

Monday, November 10, 2008

Help, I can’t read anymore!

I used to read a lot. As a child and in my teenage years, I was very passionate for books and spent a lot of time reading them. I loved fiction books, and could become so abstracted into a fantasy, adventure or science fiction world (my favorites) that sometimes people would talk to me and I wouldn’t notice at first. To this day I remain somewhat dreamy and utopian from the stuff I used to read. For example, I had the “perfect soulmate” myth for some years during my teenage years (that’s probably why I had considerably less girlfriends during that time than my friends did — or at least that they said they did).

And then there were the non-fiction books. As a child, I had several “thousand-answers-books”, that answered a myriad of questions about the world, the universe, we humans, whatever… Then I moved to science books — Carl Sagan, Richard Feynman, and several other popularizers of science. I always had a thirst for knowledge. I had a dream to have a personal library full of books, and of course an encyclopedia spanning several big, heavy, leather-bound volumes with old, dusty, yellow pages…

But then came the Internet. And a few years later, Wikipedia. I quickly fell in love with both (I have been an active wikipedian since 2005), and let myself get lost in this world of quick retrieval of information and entertainment. Meanwhile, I started having less and less time to read books (and less money to buy them) as I went to university, in 2004.

I hardly noticed, but this shift to digital media has made a great change in my attention span abilities. This is not totally new to me. Back when I was in high school, several teachers got mad at me for drawing doodles in their classes (they quickly learned to ignore it after getting the right answers to the questions they’d surprise me with, attempting to ridicule me in front of the class for my distraction — I was paying attention, just not looking at them).

In university, my classmates often observed that I seem to be distracted browsing websites or reading my mail while the teachers talk, and then surprise them by asking the teacher timely questions that reveal that in reality I did listen to what they were saying.

However, in the last few years, I’ve noticed that whenever I tried to read a book, I simply got lost several times. No matter how deep or concentrated I was into the fictional atmosphere (or argument being pointed out, in case of non-fiction books), sometimes bursts of thought would simply emerge from a keyword or idea, and drive my mind away from the storyline while I followed the chain of thoughts into a conclusion. As a consequence, I often have to read the same paragraph twice or more, because the first pass was done automatically by my eyes, while the mind was going through a totally different path.

This, of course, was a problem. Initially I thought I suffered from AADD, or, a little more jokingly (though not much), NADD. But as I was reading Cory Doctorow’s post on the subject, I realized that in fact this is simply a paradigm shift that’s happening globally in the way we deal with knowledge. We’re becoming more efficient, the information is flowing faster and in smaller chunks (think single mp3s as opposed to a full CD, or YouTube clips of a TV show, or the link to AADD above which you could have followed to learn about this acronym) — but all this at the expense of a shorter attention span.

I’d say this actually is a good thing. It’s different, but not bad. Note, for example, that if people became able to use telepathy, our ability to express thought with words would quickly disappear… It’s just too inefficient and error-prone. This is not an entirely new phenomenon anyway, as Doctorow points out: there was a similar shift when we moved from an oral to a written culture: more memory on paper, longer content. More accuracy*. Now we’re moving back into shorter content, but we’re increasing its accuracy even more.

* Side note: Writing brought less inaccuracies, this is common sense. There’s a  popular saying that goes “He who tells a tale adds a tail” — some people know this concept from the game broken telephone (also called Chinese whispers) — that is inherent to oral culture. Copying books by hand was much more accurate. But there were typos, that mechanical copying (Gutenberg’s printing press) reduced. And digital copying reduces them even more, as it is very easy to change a digital copy to fix errors.

For me, this phenomenon was present even before I knew the digital culture — as I pointed out in the classroom examples, or as can be deduced by my (old, by now) habit to use brackets in my writings. Nevertheless, it happened in a much smaller scale. But now, it’s spreading fast. And it’s come to stay.

Posted by Waldir Pimenta at 00:08:09 | Permalink | No Comments »

Wednesday, October 22, 2008

did you know that one too?

Amazing! I just found out that if you lend your camera to a random stranger to take a picture of you, HE gets the copyrights to that photo! ah the wonderful nuances of copyright law…
Posted by Waldir Pimenta at 10:08:43 | Permalink | Comments (1) »

Saturday, June 28, 2008

Women in red

Women in red. I like particularly this one.

Posted by Waldir Pimenta at 11:35:48 | Permalink | Comments (1) »

Friday, June 13, 2008

Why I go to bed late sometimes

This is why sometimes I stay up working through the night, and then sleep across all morning:

The clock’s methodical ticking helped bring into being the scientific mind and the scientific man. But it also took something away. As the late MIT computer scientist Joseph Weizenbaum observed in his 1976 book, Computer Power and Human Reason: From Judgment to Calculation, the conception of the world that emerged from the widespread use of timekeeping instruments “remains an impoverished version of the older one, for it rests on a rejection of those direct experiences that formed the basis for, and indeed constituted, the old reality.” In deciding when to eat, to work, to sleep, to rise, we stopped listening to our senses and started obeying the clock.

Extracted from Is Google Making Us Stupid? by Nicholas Carr (emphasis mine)

Posted by Waldir Pimenta at 03:32:13 | Permalink | No Comments »

Friday, June 6, 2008

Artists Depend On A Rich Public Domain

Há uns dias atrás esteve na minha escola um grupo de jovens de uma empresa de design multimédia que faz trabalhos para várias empresas grandes no panorama português, e até internacional. O objectivo era fornecerem-nos uma visão de como era trabalhar nessa área, com ênfase nas diferenças entre os trabalhos académicos e os “reais” pedidos por empresas clientes.

Fiquei ligeiramente surpreso por a apresentação deles (largamente improvisada, aliás) ter-se focado em dois aspectos principais: os prazos curtíssimos que têm para entregar os trabalhos, e as dificuldades em arranjar conteúdo para os produzir, devido ao licenciamento do conteúdo existente (copyright).

Li hoje um texto, do qual abaixo reproduzo uma parte, que penso ser extremamente relevante para este assunto:

If we know little about the utility of longer copyright terms, there is abundant evidence regarding the vital importance to the progress of our culture of a robust stock of public domain works.

Most artists, if pressed, will admit that the true mother of invention in the arts is not necessity, but theft. And this is true even for our greatest artists. Shakespeare’s Romeo and Juliet (1591) was taken from Arthur Brooke’s poem Romeus and Juliet (1562), and most of Shakespeare’s historical plays would have infringed Holingshead’s Chronicles of England (1573). For the third movement of the overture to Theodora, Handel drew on a harpsichord piece by Gottlieb Muffat (1690-1770). Passages of both works are compared at this very interesting web site.

Cultural giants borrow, and so do corporate giants. Ironically, many of Disney’s animated films are based on Nineteenth Century public domain works, including Snow White and the Seven Dwarfs, Cinderella, Pinocchio, The Hunchback of Notre Dame, Alice in Wonderland, and The Jungle Book (released exactly one year after Kipling’s copyrights expired).

Borrowing is ubiquitous, inevitable, and, most importantly, good. Contrary to the romantic notion that true genius inheres in creating something completely new, genius is often better described as opening up new meanings on well-trodden themes. Leonard Bernstein’s reworking in West Side Story of Romeo and Juliet is a good example.

extraído de “The Mouse That Ate the Public Domain“, por Chris Sprigman

É realmente triste ver que cada vez mais prolifera a defesa do copyright, dificultando o trabalho dos artistas de diversas áreas, enquanto dá lucro e mais lucro às grandes corporações comerciais. Pouca gente tem consciência da importância do domínio público e de conteúdo licenciado em licenças copyleft, apesar de várias iniciativas terem sido lançadas nesse sentido: o Projecto Gutenberg, a Wikipédia, o site do músico Moby que disponibiliza música original para bandas sonoras com uma licença menos restritiva, o movimento Creative Commons que por exemplo já está no flickr e em muitos outros sites como opção de licenciamento das fotos, permitindo assim que as imagens sejam reutilizadas legalmente como parte de obras criativas e artísticas…

Espero que agora na era digital as pessoas ganhem mais consciência deste tema e que participem no movimento para ajudar os artistas do presente e do futuro. E sim, o mortal pode fazer algo para mudar o sistema: por exemplo, licenciar as suas fotos no flickr sob licenças creative commons em vez de usar o copyright tradicional (todos os direitos reservados). Porque (e muita gente não tem consciência disso) se um trabalho não tiver licenciamento atribuído, legalmente é assumido o copyright absoluto…

Posted by Waldir Pimenta at 10:51:41 | Permalink | Comments (2)

Monday, June 2, 2008

The Classic

A classic - something that everybody wants to have read and nobody wants to read.

Mark Twain
Posted by Waldir Pimenta at 22:32:38 | Permalink | No Comments »