reasoning
dmunger | April 15, 2008Clicking on the link below will bring up an image in a new window (you may need to disable pop-up blockers to do this). The picture contains five rows of asterisks. Your job is to count them as quickly as possible. Try using your finger to point and help keep track.
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Now try the same task again, only this time, keep your hands flat on the table while you count.
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If you're like most people, this second task was a little more difficult for you. It's not that you need to use your finger to help you count, it just seems to help things along a bit. When you weren't using your…
dmunger | April 3, 2008"Outing" gays and lesbians has always been a controversial practice, especially when done without the outed person's consent. But even when an individual outs him or herself, some people argue that outing is inappropriate because of the negative stereotypes that are evoked. But there's a subtler sort of outing as well: even if a person is publicly out, not everyone is immediately aware of it. While most Americans know that Ellen DeGeneres is a lesbian, fewer people might be aware that Alice Walker is too. While they might know Freddy Mercury was gay, they might not know about Cole Porter.
It…
dmunger | March 13, 2008Psychologists often complain that neuroscientists get a disproportionate share of the glory when the mainstream media reports on their studies. It seems to some that an important new psychology study is often neglected or ignored entirely, while neuroscience studies of similar importance are hailed as "groundbreaking." What is it about pictures of brains that are so appealing?
A while back, were excited to hear of a study which promised to show that people are more impressed by neuroscience explanations of research results than nonneural psychology explanations. Paul Bloom's article about the…
dmunger | March 6, 2008When I write an article for Cognitive Daily, I follow a similar pattern nearly every time. First I carefully read the journal article I'll be discussing. Next I take a break and work on something else. Then I get myself a caffeinated beverage and some kind of sweet treat (usually it's chocolate-covered raisins but today I'm in a coffee shop having just finished a toffee almond bar). Often it won't be until ten or fifteen minutes after I've eaten that I really get into a groove with the writing. Then I write the entire post, usually for an hour or two straight, pausing only to produce the…
dmunger | March 3, 2008You might expect someone's cultural background to influence their speech, their appearance, their musical tastes, and the foods they like. You'd probably also expect culture to have an impact on values and beliefs, on stories and traditions. But what about their bodies -- not just physical features like skin color or hair texture, but attitude towards the self? If culture touches on so many aspects of an individual, perhaps it can also impact the subtle ways people think about of their own bodies.
Consider this fairly well-established difference between Euro-Americans and Asian Americans:…
dmunger | February 14, 2008I don't need words to think about the shape of a car, or how to throw a football, or the taste of a chocolate chip cookie. In fact, things like that are probably easier to think about without using language. That's why the strong form of the Sapir-Whorf hypothesis -- that language is necessary for conscious thought -- doesn't hold up. But even if language isn't required for some domains, it's still possible that it is required for certain types of mental processes. It may even be required for some thoughts that aren't obviously related to language.
Some research suggests that understanding…
dmunger | February 13, 2008Which of these two pictures is more memorable?
The shot on the left is interesting primarily because Nora's in it -- if it was just a picture of a muddy trail, it wouldn't be notable at all to most people. The shot on the right is a dramatic mountain scene that you might remember even though (or perhaps because) there's not a human in sight.
But a seasoned hiker might be more interested in the photo of the muddy trail, which gives more information about the difficulty of the hike than a panoramic shot. Just as expert chess players are good at remembering the position of chess pieces on the…
dmunger | January 22, 2008When we first moved to the small suburban town we still live in, we quickly realized we needed to buy a second car. Nora and Jim were just one and two and a half years old, only barely beginning to understand language. After we made our purchase, sometimes we drove in the old car (a Subaru station wagon), and sometimes in the new car (a Plymouth minivan). Since neither child could pronounce words as complicated as "minivan," they had to come up with their own way to refer to the vehicles. They called the Subaru the "red car" and the van the "blue car."
But there were many other ways they…
dmunger | January 14, 2008I was a little surprised by an offhand observation Thomas Schubert made in a recent research report. He claimed that while men will commonly make a fist to celebrate a goal in a soccer match or a home run in baseball, it's unusual for women to do so.
I'm sure I've seen both female athletes and fans celebrating with fist pumps. But maybe I only noticed these cases because they were exceptions. Let's see if we can verify Schubert's observation with a little poll.
Take the pollFree Poll by Blog Flux
But there are additional gender dynamics to making fists besides who celebrates that way at a…
dmunger | January 10, 2008There was a lot of buzz online a couple months back when an article entitled "Moniker Maladies" made what seemed to many to be a startling claim: Baseball players strike out more often when their names start with "K"; Students with the initials "C" and "D" get worse grades than others.
Actually, this effect, known as the "name-letter effect," has been known for several years. If your name -- even your last name -- starts with T, you're more likely to live in Tacoma or Tulsa than San Francisco or Springfield. Chris at Mixing Memory wrote an excellent summary of the research, so I won't repeat…
dmunger | January 7, 2008The Sapir-Whorf Hypothesis -- stated in its strongest form -- claims that language determines thoughts: if a language doesn't have a means of expressing a particular idea, then people speaking that language can't even conceive of that idea. This strong form has long since been rejected: There are plenty of thoughts we can have without having the words to express them.
But there is also little question that the available words do have an important impact on our thoughts. If a language doesn't have a way to express numbers above 10, for example, then that would probably result in a somewhat…
dmunger | December 4, 2007One of our readers emailed us asking if there has ever been research on whether kids' understanding of numbers -- especially large numbers -- differs from adults. Greta did a little poking around and found a fascinating study on second- and fourth-graders.
In the U.S. (and I suspect around the world), kids this age are usually taught about numbers using a number line. In first grade, they might be introduced to a line from 0 or 1 to 10. In second grade, this is typically expanded up to 100. But what happens when second-graders are asked to place numbers on a line extending all the way up to 1…
dmunger | November 13, 2007Yesterday we discussed several experiments offering converging evidence that exposure to the color red, even for brief periods before taking a test, can result in lower achievement. It's startling research, but as my daughter suggested at breakfast this morning, maybe people are just intimidated by the color red because that's the color that's always used for grading.
Aren't we just conditioned to see red as threatening? That might be part of it, but in nature red also frequently suggests danger. Many poisonous plants and animals are red. Blood is red. Hot coals and lava are red. It's…
dmunger | November 12, 2007One of the things I was taught in English graduate school was never to grade papers using red ink. Students don't respond well to the color red, I was told -- it's intimidating. I always thought this was a little far-fetched, and my instructors couldn't offer a peer-reviewed journal article that definitively answered the question of whether red ink was harmful.
There is some research on the question of whether red is harmful in an academic setting -- but it's inconclusive, with some studies showing harm and others appearing to show a benefit to the color red. For decades, there has been a…
dmunger | November 5, 2007Imagine that, over the course of a conversation with a friend from work, she makes the following two statements:
It's possible that my brother will be coming into town tomorrow
It's possible that our boss knows about the affair you had with the intern
(You might also have to imagine a more adventurous romantic life for yourself). Which of these two statements do you think your friend believes is most likely to be true? Let's make this a poll:
If I did a good job setting up this scenario, I should be able to predict the results of the poll. I'll get to my prediction in a minute.
First, let'…
dmunger | October 16, 2007
Does religion increase "virtuous" behavior? So far the research on the topic has been inconclusive. A big problem with most studies is that they tend to be correlational. For example, religious people are more likely to say they are willing to help others. But are they willing to help others because they are religious, or is it the other way around? Or could some other factor cause both the religiosity and the helpfulness?
Few experimental studies have been conducted on the effect of religion, but Azim Shariff and Ara Norenzayan believe they have come up with a paradigm that does demonstrate…
dmunger | September 27, 2007
Yesterday, we discussed sex differences at the highest levels of achievement and found that there are some significant differences between males and females. But despite these observations, it's still unclear why the disparity exists, and what can or should be done about it.
Sex differences in brain structure
One possibility is that the physical structure of the brain is different for males and females. MRI imaging shows that males do have larger brains than females on average. But women have a higher proportion of "gray matter" -- the part of the brain where most cognitive activity is…
dmunger | September 26, 2007In yesterday's post, we discussed sex differences in achievement and ability. Few were identified. For the most part, however, this research discussed average differences. The problem with only discussing averages is that people engaged in science and math careers are far from "average" when it comes to math and science ability. Math and science professors often score in the top 1 percent -- or higher -- on standardized math tests.
It's entirely possible that the top 1 percent looks very different from the average results for the population. Consider this graph of test scores from two…
dmunger | September 20, 2007
Here's a task that four-year-olds can do but three-year-olds have some trouble with. Imagine Sally in the picture below is playing with a ball. She puts the ball in the box and goes to the kitchen to get a drink. While she's gone, Bill takes the ball out of the box and puts it in the bucket. When Sally returns, where does she look for the ball?
Most three-year-olds will say Sally would look in the bucket, apparently failing to realize that Sally doesn't know anything about what Bill did while she was gone. Some researchers have explained this phenomenon by speculating that young children…
dmunger | September 11, 2007
A recent report in Nature Neuroscience has gotten a lot of press. The headlines proclaim that "left-wing" brains are different from "right wing" brains. Are our brains literally hard-wired to be conservative or liberal? The article in the L.A. Times sure seems to suggest it:
Sulloway said the results could explain why President Bush demonstrated a single-minded commitment to the Iraq war and why some people perceived Sen. John F. Kerry, the liberal Massachusetts Democrat who opposed Bush in the 2004 presidential race, as a "flip-flopper" for changing his mind about the conflict.
Really?…