social
dmunger | July 29, 2009Implicit attitudes and associations can tell us a lot about a person. It's a way to find out if they might have a racial or gender bias, and recently there has even been some work suggesting that an implicit association test can tell us whether someone is lying -- it's called the autobiographical Implicit Association Test (aIAT). Here's how it works:
Suppose you're an American soldier and you want to know if an Afghan you've captured is really a member of the Taliban, despite his assurances that he supports your side and only carries a Kalashnikov for self-defense. You fire up the aIAT…
dmunger | July 21, 2009[Originally posted in November 2006]
The recent controversial shooting of an unarmed black man in New York has generated terrible grief and perhaps justifiable anger. But if officers honestly believed the man was armed and intended to harm them, weren't they justified in shooting?
Perhaps, but an important additional question is this: were they predisposed to believe he was armed simply because he was black? Consider this quick movie:
Click to play (QuickTime required)
It will flash two pictures. One man is armed, the other unarmed. Who do you shoot? I've primed you to think about race, so it…
dmunger | July 9, 2009[Originally posted in December, 2007]
Do smells have an impact on how we judge people? Certainly if someone smells bad, we may have a negative impression of the person. But what if the smell is so subtle we don't consciously notice it? Research results have been mixed, with some studies actually reporting that we like people more when in the presence of undetectable amounts of bad-smelling stuff. How could that be?
A team led by Wen Li believes that the judges might have actually been able to detect the odor, and then accounted for it in their response -- giving a face the benefit of the…
dmunger | July 2, 2009Take a group of 18- and 19-year-old women, college freshmen and sophomores. Then test them to find out who has the most social anxiety: who's most nervous about dealing with other people, particularly in public situations. What would be the most difficult thing you could ask these high-social-anxiety women to do? How about this:
I would like you to prepare and deliver a four-minute talk. This talk will be videotaped and viewed later by several professors and graduate students.... It is extremely important that you do the best job that you can with this talk.... Your talk should be about the…
dmunger | June 10, 2009When Nora was born, Jim was just 19 months old, and still unable to communicate other than with the most basic words (ba-ba, da-da, na-na). But we could tell right away that while he liked his new sister, he was a little jealous when our attention was focused on her needs, instead of his, as they had been his entire life. So we decided to get him a little baby doll, a boy, which he called "Seth." When we fed Nora, Jim fed Seth. When we changed her diapers, he changed Seth, and so on.
This was an effective distraction for a few months, but eventually Jim decided it was too much work caring for…
bioephemera | June 10, 2009One of the challenges we faced with our new blogosphere initiative, Silence is the Enemy, was how to mobilize people to do something about the plight of rape victims. It's not that people don't have empathy for rape victims; it's that the experience of living in a war-torn nation where rape and murder are routine facts of life is so foreign and horrifying to us, we tend to tune it out. Part of the way to deal with this is to give people a clear mission - something simple they can do; in our case, donating to Doctors without Borders (as I am for the month of June), or writing to Congress, or…
dmunger | May 25, 2009[This article was originally posted in December, 2006]
I'm not bitter about this, honest I'm not, but it does often seem that people who know you very well end up buying really lousy gifts. What I really want to find out is this: why do they do that? It turns out, market researchers want to know, too. How can they have a prayer of selling people things they don't want when people can't even convince their loved ones to buy them things they do want?
Davy Lerouge and Luk Warlop have designed a clever study to examine this very issue. They wanted to know whether couples who've been together for…
dmunger | May 20, 2009When I was in elementary school, we had two recesses every day: 20 minutes in the morning and 20 minutes in the afternoon. Plus, we had a 30-minute lunch period, and as soon as we finished eating we were free to go outside and play until the bell rang.
So I was a little surprised when our kids started elementary school 30 years later and found that there was almost *no* recess. Even at lunchtime, they all lined up and headed straight for the lunchroom. When they finished (after just 20 minutes), they had to march right back to the classroom for more lessons. The only physical activity they…
dmunger | May 7, 2009Joe and Michelle are having dinner at a romantic restaurant. It's their first anniversary, and everything is perfect -- until an attractive woman walks past the table. Michelle notices that Joe casts a quick glance at the woman. Michelle flashes an annoyed glare at Joe, who knows he's in trouble. "I didn't mean to look at her," he pleads, "guys just can't help it when a pretty woman walks by." Michelle gasps. "B-but she's not as pretty as you," Joe stammers, unpersuasively.
Is it really true that we can't help looking at a pretty face? There's a lot of research suggesting that we notice…
dmunger | April 23, 2009Imagine the following scenario:
Matthew is playing with his new kitten late one night. He is wearing only his boxer shorts, and the kitten sometimes walks over his genitals. Eventually, this arouses him, and he begins to rub his bare genitals along the kitten's body. The kitten purrs, and seems to enjoy the contact. How wrong is it for Matthew to be rubbing himself against the kitten?
Or how about this one:
You find a wallet with several hundred dollars in cash, along with credit cards including an American Express Gold Card and ID locating the owner's home in the richest neighborhood in town…
dmunger | April 13, 2009One of the most controversial topics here on Cognitive Daily is whether playing video games can lead to aggressive behavior or violence -- and one of the most dramatic demonstrations of the impact of violent video games was a 2000 study by Craig Anderson and Karen Dill. In that study, participants played violent or non-violent games, and then were asked to play another "game," this time against what they believed was a real person in a nearby room. In fact, there was no human opponent, and the game was rigged so that the player "won" half the time. The gamers were wearing headphones, and…
edyong | April 10, 2009We get a lot of information from watching other people. We read reviews, we follow links to recommended websites and we listen when our friends vouch for strangers. The opinions of strangers may even be a better guide to the things that make us happy than our own predictions. But humans aren't the only species to make decisions based on information gleaned from our peers - even animals as supposedly simple as flies can do the same.
Frederic Mery from LEGS (the Laboratory of Evolution, Genomes and Speciation) studied the fly Drosophila melanogaster and found that females have a tendency to…
bioephemera | March 31, 2009
My friend John Ohab is hosting a new DoD webcast called "Armed With Science." Sure, it has an over-the-top logo reminiscent of the Syfy Channel (I like to intone "ARMED WITH SCIENCE" with the same cadence as "PIGS IN SPACE!"), but the show turns out to be really well-done and interesting. Each episode is a half-hour interview with a researchers in a scientific field relevant to the military: sometimes that means SONAR or geopositioning, but they also take on general science topics like Brain Awareness Week at the National Museum of Health and Medicine. It's a nice mix of topics, and it's…
dmunger | March 5, 2009A few years ago we discussed a fascinating study which appeared to show that the main reason we stop eating at the end of a meal isn't because we "feel" full. Instead, we simply see that we've finished eating the food in front of us, so we stop. We don't eat more an hour later because we remember we just ate.
In that study, led by Paul Rozin, experimenters provided two amnesic patients with two meals separated by just 15 minutes. They both did not recall eating the previous meal due to their medical condition, and each of them ate both meals as if they hadn't had anything to eat.
But maybe…
dmunger | February 17, 2009I had a newspaper route up until I was in the ninth grade, and what I dreaded about the job was going door-to-door collecting subscription fees. The worst part was probably the odors in some of the houses. One house emanated a toxic mixture of Lysol, alcohol, pet dander, and cigarette smoke. These people inevitably were out of cash, so I had to return again and again until I finally was able to negotiate payment -- sometimes months overdue.
But maybe the smell was prejudicing my judgment. Lots of people couldn't pay me right away. Why should I only hate the ones with drinking/pet/smoking/air…
dmunger | February 11, 2009How do you decide how dangerous a sex-offender is? Certainly all cases of sexual assault are appalling, but clearly some incidents are worse than others. In some places, teenagers who photograph themselves naked and send the pictures to their friends can be prosecuted as purveyors of child-pornography. While we may want to intervene in these cases, surely the action shouldn't be as drastic as when we're dealing with an adult who's a serial child rapist.
There are miles of gray area between these two extremes, and psychologists are often called on to make the tough judgment of how dangerous a…
dmunger | January 26, 2009Two years ago, we linked to a post about an ABC news program that claimed to have replicated Stanley Milgram's controversial experiments from the 1960s and 70s about obedience to authority. The original study tricked unwitting paid study participants into believing that they had administered potentially deadly shocks at the bidding of an experimenter. The cover was a "learning and memory experiment," allegedly designed to see if administering shocks would improve people's ability to memorize a list of words.
The shocks progressively escalated from 15 volts ("Slight Shock") to 450 volts ("…
dmunger | January 7, 2009Every year about this time, we start thinking about an exciting television event: the Super Bowl. I'm excited because it's the biggest football game of the year. The rest of the family just likes to watch the commercials. No doubt, some of those commercials are hilarious, and there's often more conversation about the commercials than the game itself. Companies spend millions buying advertising time, and millions more developing commercials that will stand out from the pack on Super Bowl Sunday. Other than watching your favorite team lose, there's nothing more disappointing than seeing an old…
dmunger | December 29, 2008[This article was originally posted in February, 2007]
The setting was an integrated suburban middle school: nearly evenly divided between black and white students. As is the case in many schools, white students outperformed black students both in grades and test scores. But how much of this difference is attributable to real differences in ability? After all, black kids grow up "knowing" that white kids do better in school. Perhaps this was just an example of kids living down to expectations.
At every performance level, this chart (adjusted for covariates) shows that black students who…
edyong | December 11, 2008Moving to a new area can be a daunting experience, especially if you don't know anyone. At first, you might cling to any friends who do live nearby but eventually, you meet new people and start to integrate. As it is with humans, so it is with elephants.
Noa Pinter-Wollman and colleagues from the University of California, Davis wanted to study how African elephants behave when they move to new environments. This happens quite naturally as elephants live in dynamic societies where small family groups continuously merge with, and separate from, each other. But they also face new territories…