Development / Aging
dmunger | November 12, 2009When we were getting ready to have our first child, I decided that I would quit my job, work out of home as a freelancer, and take care of our baby while Greta finished graduate school.
That worked well for about two years, but by the time Nora was born, we decided to hire a part-time nanny so I could finish a degree of my own. When Nora was one and Greta and I were starting new jobs in a new state, both kids entered full-time day care, and that was our child-care arrangement until they started kindergarten.
Naturally, at every step along the way, we wondered whether we were making the right…
dmunger | November 10, 2009Take a look at this video from last night's episode of Jon Stewart's "The Daily Show."
If you'd like, you can skip past all the political snark to the 4:47 mark to watch Jon bring cognitive psychology into prime time (or at least latenight cable)! That's right; you saw it: Jon Stewart mentioned the psychological concept of "object permanence" on national TV. Object permanence was introduced by Jean Piaget as a way of measuring the growing cognitive ability of children. Three-month-olds don't have it; most 6-month-olds do. More recently, researchers have investigated similar milestones in…
dmunger | October 29, 2009Take a look at this face:
Does it look more angry or fearful? It may be rather difficult to tell: About fifty percent of adults say faces like this are angry and fifty percent say it's fearful. However, for children, the story is different. Researchers have found that small children aren't as good as adults at recognizing emotions in faces. Young children would see this picture as more fearful than angry. However, most research has suggested that kids are just about as good as adults by the time they're five years old.
But neuroscientists have consistently found that the portions of the…
dmunger | October 22, 2009When Jim and Nora were in elementary school, both Greta and I worked challenging jobs, so we did whatever we could to save time. Instead of bringing lunches made by their parents, the kids bought hot meals at school. The school was proud of its cafeteria. Kids had credit accounts, which meant they didn't have to carry lunch money to school (thus making them less of a target for bullies). The children were encouraged to make "healthy choices" instead of just getting a ladleful of mystery meat plopped on their trays.
After a few billing cycles, however, we noticed that Jim was spending more and…
dmunger | September 22, 2009Imagine your neighbor has a dog that regularly escapes her yard. One day you see the dog escape and return it to her. She thanks you by giving you a piece of delicious home-made apple pie. This happens several days in a row. Then one day when you return the dog, there's no pie, no thanks, and no explanation. Would you return the dog the next time it escapes?
You might be disinclined. But what if there had never been any reward? Wouldn't returning her dog be the right thing to do?
Children as young as 14 months old will spontaneously help others for no reward. But a 1973 study of 3- to 5-year-…
dmunger | August 27, 2009One of the most exciting moments of my junior-high-school career was stepping into my first-ever foreign-language classroom. While foreign language studies had a reputation for being tedious, I was nonetheless thrilled at the idea of being able to communicate with people from a different, seemingly more exotic part of the world. We were allowed to choose between French and Spanish, and I picked French because it seemed more "glamorous."
Excited as I was to learn a new language, I was still shocked to find out that every word was either "masculine" or "feminine." Livre, "book," was masculine…
dmunger | August 18, 2009[This post was originally published in September, 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…
dmunger | July 23, 2009[Originally posted in April 2007]
Cognitive decline as we age is all over the news lately. "Brain fitness" products are available for cell phones, Game Boys, and Xboxes, all designed to prevent the natural decline in cognitive ability as we age. There's even a significant body of work suggesting that this sort of product really can work.
But some of the brain games can be dull, repetitive work: memory tasks, number games, and optical illusions, while endlessly fascinating to cognitive scientists, might be less appealing to the general population.
Researchers Helga and Tony Noice believe that…
dmunger | July 16, 2009When school budgets are cut, programs in music and the arts are often the first to get axed. While this makes a certain amount of sense because music isn't always considered "essential" to education, recently in the U.S. we're starting to see another justification for cutting music out of schools. The No Child Left Behind Act demands that students meet a certain basic level of academic success, or a school's budget can be cut. "Extras" like music classes and recess only distract from the primary goals of learning English, math, science, and history, some say.
But does music participation…
dmunger | June 30, 2009New parents can come up with a seemingly endless array of vexing questions about their infants, from the best brand of stroller to the ideal song to sing them to sleep. The questions begin well before the child is born: what type of clothing should you purchase? What kind of crib?
One question Greta and I dwelled on quite extensively when Jim was an infant was color. We were renting an apartment and couldn't paint the nursery, so we wondered about the color of the toys we bought and the blankets and other bedding for the crib. Would a purple outfit be appreciated? What about a multi-colored…
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…
dmunger | June 4, 2009It's pretty obvious to most people that the two shoes in this picture are the same size:
But if you actually took a ruler to your computer display it would show that the image of my right shoe is nearly twice as wide as the image of my left shoe. Young children will mistakenly say that the real left shoe is smaller than the right shoe; it's only gradually that we learn to take the context of the photo into account and conclude that the shoes are the same size: the shoes appear to be a matched set; the left shoe is a bit out of focus, the railing to the left shows that the left shoe is…
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 13, 2009A few weeks ago, a new study made headlines in major newspapers across the country: Study Finds Some Youths 'Addicted' to Video Games, proclaimed the Washington Post. The Post article cited a figure of 8.5 percent of gamers age 8-18 nationwide showing signs of a behavioral addiction. Since the study found that 88 percent of children play video games, the scale of this problem is potentially vast -- as many as 3 million kids, addicted to video games.
The claim of "addiction" is quite serious. Just doing something a lot isn't enough to qualify as an addiction, it must have a detrimental effect…
dmunger | April 27, 2009Last year's movie Changeling tells the story, from the late 1920s, of a mother whose son is kidnapped. Then, six months later, the police say they've found the boy and return him to his mother, who immediately claims that the boy they returned was not her son. She's then coerced into taking this child in, and doctors are brought forward to convince her that this is really her son. People change, she is told, and she's has been through severe mental trauma. Surely the best medical minds in the country know better than a single mother.
The film ends up being a scathing indictment of the LAPD,…
dmunger | April 22, 2009I was a member of my high school debate team, and I did fairly well, but my partner, Glenn, always got better marks from the judges. Most often, they praised his hand gestures, which were proclaimed to be "expressive" and "informative." One year our topic was arms control, and our opponents were arguing that "NATO standardization" could help reduce U.S. arms sales. Glenn didn't understand their argument, so during our precious three minutes of preparation time, I explained it to him. Then he stood up and delivered his rebuttal, using the most graceful hand gestures imaginable. The judges…
dmunger | April 1, 2009Take a look at this astonishing (and adorable) video demonstrating how a baby acquires object permanence.
At 6 months old, the baby can see and reach for an object, but as soon as it is hidden, she doesn't seem to realize it's there. The baby is interested and excited by the objects, but when they're not visible, it's as if her memory has been wiped clean.
By 10 months, the phenomenon has vanished and the baby behaves like any older child would, clearly realizing that the book is hidden under the blanket and immediately uncovering it.
But 10-month-olds will make another error. If you have…
dmunger | March 11, 2009There's been a ton of research on the impact of working memory: its importance in learning, its effect on math skills, and its relationship to other mental abilities. Yesterday's entry on The Wild Side discusses working memory's relationship with IQ. It's been shown that adults can improve working memory with training, and training has even been shown to work for kids as young as seven.
There are clearly tremendous benefits to working memory (and at least one down side). A related mental function, inhibitory control, is also a key to many cognitive abilities. But if working memory training…
dmunger | February 3, 2009You may have heard of the Stroop effect, and you may have even seen it demonstrated. But can the Stroop effect itself be manipulated? This short demo may show that it can.
In case you're not familiar with the effect, it occurs when you try to say the color a word is printed in, while the word itself names a color (so if you see "RED" you should say "green.") Try it with these short lists. Remember, say the color the word is PRINTED in, not the color named by the word.
Which column was most difficult? Let's make this a poll:
Which column was the most difficult? ( surveys)
The basic…
dmunger | January 21, 2009There's lots of evidence that most TV isn't beneficial to toddlers, and it may even be harmful. But can't kids learn from TV too? Isn't that supposed to be what shows like Teletubbies, Barney, and Sesame street are all about? For older children, three and above, it does seem to be true that some learning can occur, but for two-year-olds and younger, the evidence tells a different story.
Few studies have shown any evidence that two-year-olds can learn from TV anywhere near as well as they learn from real-world experiences. While they clearly can distinguish between nonsense programming and…