Slashdot Mirror
Web Users Judge Sites in the Blink of an Eye
dogbolter writes "Nature.com is reporting on a study by Canadian researcher Gitte Lindgaard of Carleton University that visitors to a webpage can make up their minds about the quality of the page within just 50 milliseconds." From the article: "We all know that first impressions count, but this study shows that the brain can make flash judgments almost as fast as the eye can take in the information. The discovery came as a surprise to some experts. "My colleagues believed it would be impossible to really see anything in less than 500 milliseconds," says Gitte Lindgaard of Carleton University in Ottawa, who has published the research in the journal Behaviour and Information Technology. Instead they found that impressions were made in the first 50 milliseconds of viewing."
I knew within 50 nanoseconds that this was a dupe.
literally yesterdays news http://science.slashdot.org/article.pl?sid=06/01/1 6/0558244
But after 50 milliseconds I decided I didn't like the page.
Slashdot editors appear to only spend 50 nanoseconds checking an article before posting.
unzip; strip; touch; finger; mount; fsck; more; yes; unmount; sleep
...book judged by cover.
Dark Energy May Be Changing
My other account has a 3-digit UID.
*shakes head*
Beware: In C++, your friends can see your privates!
Fresh coffee and fresh dupes ... what more do you want to start the day?
It happens when they change somthing in the Matrix, so beware, agents are coming!
-- javaDragon is an instance of JavaDragon.
Grab your +5 comments here for some instant karma. Well, the editors dupe the articles, we might as well dupe the comments...
It's official. Most of you are morons.
I may be asking for it here but I always wondered this. I've been reading /. for years but only recently started posting and my question is, why do some people get so angry about dupes? They can be a bit annoying, yes but I've read some really horrible and insulting remaks to the editors in the past because of dupes. I mean people seem furious. It's like the editors kicked their children and stole the ice-cream while delivering the household bills.
Have I missed something that makes this crime so heinous.
Excuse me, you're not supposed to be posting about the article. This is a chance for everyone to complain about /.'s dupe policy.
To appreciate the effect fully, go back to the original article and (if you have points left) moderate everything redundant.
Aah, the power of Slashdot...
Cogito, ergo sig.
You know this idea that people make judgements in the first 50ms before you can really gain a conscious impression of it (though probably something flashes in your subconcious) remind me of one of the entries in the "Dangerous Ideas" article in Edge (slashdot had it as a story a short while ago) in which Nobel Prize winning biochemist Eric R. Kandel argues that much of what we call "free will" is processed unconsciously without awareness:
http://www.edge.org/q2006/q06_5.html
ERIC R. KANDEL
Biochemist and University Professor, Columbia University; Recipient, The Nobel Prize, 2000; Author, Cellular Basis of Behavior
Free will is exercised unconsciously, without awareness
It is clear that consciousness is central to understanding human mental processes, and therefore is the holy grail of modern neuroscience. What is less clear is that much of our mental processes are unconscious and that these unconscious processes are as important as conscious mental processes for understanding the mind. Indeed most cognitive processes never reach consciousness.
As Sigmund Freud emphasized at the beginning of the 20th century most of our perceptual and cognitive processes are unconscious, except those that are in the immediate focus of our attention. Based on these insights Freud emphasized that unconscious mental processes guide much of human behavior.
Freud's idea was a natural extension of the notion of unconscious inference proposed in the 1860s by Hermann Helmholtz, the German physicist turned neural scientist. Helmholtz was the first to measure the conduction of electrical signals in nerves. He had expected it to be as the speed of light, fast as the conduction of electricity in copper cables, and found to his surprise that it was much slower, only about 90m sec. He then examined the reaction time, the time it takes a subject to respond to a consciously a perceived stimulus, and found that it was much, much slower than even the combined conduction times required for sensory and motor activities.
This caused Helmholz to argue that a great deal of brain processing occurred unconsciously prior to conscious perception of an object. Helmholtz went on to argue that much of what goes on in the brain is not represented in consciousness and that the perception of objects depends upon "unconscious inferences" made by the brain, based on thinking and reasoning without awareness. This view was not accepted by many brain scientists who believed that consciousness is necessary for making inferences. However, in the 1970s a number of experiments began to accumulate in favor of the idea that most cognitive processes that occur in the brain never enter consciousness.
Perhaps the most influential of these experiments were those carried out by Benjamin Libet in 1986. Libet used as his starting point a discovery made by the German neurologist Hans Kornhuber. Kornhuber asked volunteers to move their right index finger. He then measured this voluntary movement with a strain gauge while at the same time recording the electrical activity of the brain by means of an electrode on the skull. After hundreds of trials, Kornhuber found that, invariably, each movement was preceded by a little blip in the electrical record from the brain, a spark of free will! He called this potential in the brain the "readiness potential" and found that it occurred one second before the voluntary movement.
Libet followed up on Kornhuber's finding with an experiment in which he asked volunteers to lift a finger whenever they felt the urge to do so. He placed an electrode on a volunteer's skull and confirmed a readiness potential about one second before the person lifted his or her finger. He then compared the time it took for the person to will the movement with the time of the readiness potential.
Amazingly, Libet found that the readiness potential appeared not after, but 200 milliseconds before a person felt the urge to move his or her finger! Thus by merely