Study in Intelligence: Downloadable Game Tests Complex Problem Solving

Genetics.Lab.Formatted

The downloadable game, Genetics Lab, is a “microworld” designed to test complex problem solving skills. Try it!

My editor’s gonna kill me: we just finalized the manuscript of my new book, BEYOND IQ, in which I interviewed top intelligence researchers about how to train skills like wisdom and willpower and problem solving that matter in the real world…and then I run across a study like this one, just published in the journal Intelligence. Basically, it says that IQ tests are great: they do a darn good job predicting which students will succeed in school. But the article wonders how much these IQ-like academic subjects and the tests that measure them continue to matter in the real world. In addition or as an alternative to traditional intelligence tests, the article evaluates measures of complex problem solving.

This is cool: instead of answering questions about trains leaving stations, vocabulary and block stacking patterns to measure IQ, the researchers propose “computer-based problem-solving scenarios called microworlds” to assess higher-order thinking skills. Designing these microworlds requires looking inside what makes higher-order thinking and, in fact, what goes on inside complex problem solving itself.

See, questions on IQ tests have answers: donkey and horse are to mule as lion and tiger are to liger. (Okay, I kind of love the liger, but that’s beside the point.) But in the real world, problems can consist of many, interconnected variables whose relationships are obscured and change over time, and goals can be unclear or even competing and contradictory – factors the authors of the Intelligence study cite as central to complex problem solving.

But pulling apart these ideas – traditional definitions of intelligence from complex problem solving – is tricky. As you’d expect, there’s significant overlap: people who are intelligent are generally good at CPS and vice a versa. But in what ways do these skills diverge? How is the intelligence measured by IQ and trained in school different from the skills of complex problem solving needed in the real world?

To answer that question researchers stuck 563 Luxembourgian high-schoolers in a genetics lab – or, at least in front of a free, downloadable microworld called Genetics Lab, which you should definitely check out if you have time. In GL, test-takers turn on and off “genes” and then click “next day” to discover how the combinations affect a fictional creature’s traits like IQ, Inventions and Ideas. It turns out to be a bit of a mish-mash and sorting out which genes create which abilities is a strange and complex soup.

Like many problems in the real world, GL not only requires manipulating information on the way to a goal, but sallying forth into the microworld to discover this information in the first place and using the information to create a mental model of how the system works. So Genetics Lab is scored three ways: Do students manipulate Genetics Lab in a way that creates unambiguous rules? Can they understand the relationships between genes and characteristics? And only finally, can they manipulate genes to get target characteristics?

Students were studious. Researchers researched. And then the researchers compared students’ three GL scores to their IQs, grades and whole bunch of other measures. What they found is cool, but only when you look at it with a bit of nuance. See, they found that Genetics Lab measures the same thing as the reasoning section of the standard IQ test. D’oh!

But, “Although they might not measure something different from reasoning scales, they measure it differently,” the authors write. And by measuring this reasoning or problem solving or whatever you want to call it differently, the researchers were able to see not only the endpoints but the waypoints that led there – they could measure problem solving process and not simply its product, and so answer not only the question of who is and is not good at reasoning/problem-solving, but what got them there.

Gathering information, making a mental model of how information drives results, and finally putting this model to work to get the results you want: that’s the process of complex problem solving. At this point, it ‘aint yet been pulled as a skill distinct from IQ-like reasoning. But a peek inside this process shows how results happen — and as a parent or teacher know this process may allow you to help your kids learn this complex and important skill.

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Girls, Math and Stereotype Threat: Study Shows Early Expectations and How to Debias Them

Kestrel getting her STEM on at the Denver Museum of Nature and Science

Kestrel getting her STEM on at the Denver Museum of Nature and Science

We went for a hike near Aspen last weekend and hiking means Math Quiz. It’s a game I play with my kids, especially with my 5yo daughter, Kestrel. We hike and I ask her things like, “If there are eight legs in a family that includes one dog, how many people are in the family?” And this helps take her mind off the miles. She likes math. She thinks she’s good at it. And I’m terrified that as she enters kindergarten this fall, her confidence and eventually her skills will start to erode.

Which is why I was interested to run across an article published last week in the journal Child Development showing that not only are girls as young as six prone to subconscious biases that can hurt their math ability, but this bias can be wiped clean, leaving attitudes and skills functioning at their fullest.

First, you might already know about stereotype threat. This is the idea that we hold within us the fear that we might accidentally act in ways that confirm stereotypes about ourselves and that these fears are like magnets that pull us toward the very stereotypical actions we hoped to avoid. Researchers like University of Chicago’s Sian Beilock show that this stereotype threat literally claims space in our working memory – the brain’s workshop for everything we do in the moment. And with stereotype threat claiming a “chunk” of working memory, we’re left less space for the mental manipulations that express themselves as intelligence.

For example, if my daughter starts (subconsciously!) worrying that a wrong answer might confirm that girls are bad at math, she has less brain space available to ensure she’s good at math. You can imagine other stereotypes and the ways in which this reduced working memory capacity can make them self-fulfilling. It’s a vicious trap. Simply knowing a stereotype makes it difficult to counteract it.

Last week’s study in Child Development showed, for the first time, the power of this stereotype threat even in kids too young to consciously endorse stereotypical beliefs. Working with 276 first-graders (average age 6.5 years old), researchers Silva Galdi, Mara Cadinu and Carlo Tomasetto first wondered if kids this young thought boys were better at math. Turns out they didn’t – consciously!

But maybe you’ve heard of implicit associations tests? If you haven’t, check out Project Implicit, hosted by Harvard. The test measures, for example, how quickly you associate black male faces with good words. Or white male faces. Or female black and white faces. Your implicit association speed can show your bias. (And is fascinatingly correlated with opinions you express on a quiz that precedes the IAT itself.)

In the current study, a kid version of the IAT showed that yes, indeed, even kids as young as first grade associate boys with math and girls with language.

Then the researchers had the kids do some coloring. A third of the kids colored a picture showing a girl solving a math problem at a blackboard while a boy sat in the front row watching. A third colored a picture of a boy solving a math problem while a girl watched. And a third colored a landscape. Then the researchers had kids do math. Do you see where this is going?

Girls with stereotype threat subconsciously boosted by coloring the picture of a math-active boy and a math-passive girl added numbers more slowly and with less accuracy than girls who’d been hit with a Danica McKellar coloring task. The boys? Meh. At least in this task, it seemed as if first grade dudes were still pretty oblivious to mind-punking via gender stereotype.

There’s beauty as well as horror in this. The horror is obvious: even in first grade, girls feel the pull of the subconscious stereotypes that can send math skills down the funnel. But the beauty is this study confirms that gender-based math stereotypes aren’t genetic or otherwise “natural.” Blame culture: Girls aren’t worse at math – after a simple coloring task that debiased this stereotype threat, girls’ math skills were perfectly equal to their math-stereotype-oblivious male counterparts.

In other words, my daughter’s love of and confidence in math needn’t erode as she ages. That is — you know — if my wife and I, all her friends, her brother, her teachers, and the models of society that surround her feed my daughter the equivalent of the girl-active coloring page.

I’m not betting on society. And so I’m gonna do my darndest to keep feeding her “math quiz” as we hike in hopes of stomping that girl-passive math stereotype into the trail before my influence fades and society’s takes over. Like an MMR vaccine, I hope that by stuffing my little girl with expectations for math success I can inoculate her against the negative coloring pages society continues to put on her desk.

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Science Writing Panel…and BEER!

WynkoopJoin me at Wynkoop Brewery in Denver on Tuesday, June 4 @ 6:00pm for a presentation and Q&A on science writing. I’ll be drinking with…er, answering questions with Susan Moran (bio), Hillary Rosner (bio) and Kendall Powell (bio), authors of The Science Writers’ Handbook. Said folderol is part of the Café Scientifique series, which requires typing a complicated keystroke to properly commit to print and is described in depth here.

Kendall writes at her much more comprehensive description of this event at her site pitchpublishprosper.com, “Whether you are a grad student looking to break into a writing career, a scientist who blogs, or simply a word nerd and science geek at heart, come join us at Wynkoop Brewing Company in Lower Downtown Denver (1634 18th Street, Denver, CO 80202, just across from Union Station) on Tuesday June 4th from 6:30-8pm.”

I’m happy to chat about the experience of interviewing over 130 MacArthur, Nobel and National Medal of Science winners while sitting next to the lawnmower in the garden shed that is my office. Or I’m happy to wax poetic about the unexpected plusses of my 1970s electric lawnmower.

In other words, join me and the Science Writer’s Handbook folks for a heckuva fun night, and maybe also some discussion of science writing.

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Screen Time, Cognition and Sleep with ISEF Winner, 16yo Zarin Rahman

ISEF Winners

Zarin Rahman (second from left) and winners of the ISEF Behavioral Sciences division.

The 2013 Intel International Science and Engineering Fair wrapped up May 17. This ultimate science fair included more than 1,500 presentations from high schoolers representing more than 70 countries, organized into categories ranging from chemistry and computer engineering to microbiology and medicine. High school junior, Zarin Rahman, from Brookings High School in South Dakota took home top prize in the Behavioral and Social Sciences category for her study of how screen time and sleep affect mood, memory and cognition. I chatted with Rahman about her work and her love of science.

Garth: First, could you tell us about your study?

Rahman: Well, the brain’s prefrontal cortex isn’t fully formed until age 25 and during the period of adolescence during which it’s maturing, the PFC is especially sensitive to environmental influences. Some of these influences – screen time particularly – are kind of new and so haven’t been fully studied. I wanted to look at this intersection of sleep, stress, screen time, and things like academic achievement and mood.

Garth: And what did you find?

Rahman: It was pretty striking, actually. First we figured out who got more and who got fewer than 8 hours of sleep per night. And we found that the sleep-deprived group had about 3.5 hours of screen time per day, whereas kids who got more than 8 hours of sleep had about 2 hours of screen time. Then we tested students’ decline in cognitive skills over the course of the school day. The high-screen, low-sleep group was more prone to stress, sleepiness, and anxiety, performed poorly on tests of cognitive ability and showed more mood issues.

Garth: So what would you tell parents about their kids’ use of screen time?

Rahman: I wouldn’t necessarily recommend against any screen time. It’s just that when kids start trading sleep for screens, it can have some serious consequences. I know that electronic devices are tools, and, like tools, they can be used to build or destroy. What we need to understand is that the overuse of these devices is negatively affecting adolescents’ cognition, mood, and memory. I hope teens will rethink the amount of time they spend on these devices after reading about my project, especially if this time affects their amount of sleep.

Garth: What did your friends think about being used as guinea pigs?

Rahman: My peers were a great group to work with – very curious and cooperative! At first, I couldn’t tell the people I used in my study the intent of the research, but they were very excited to participate. Then they were kind of stunned by the results. They definitely think my award is cool, and are happy for me. A few of them actually asked me for a portion of my award as payment for being a subject in my research!

Garth: What draws you to science? When do you remember first being interested?

Rahman: Science is fascinating to me because it’s always changing. There is always discovery. However, my favorite part of science is what it can tell us about ourselves, how we can improve our lives and the world we live in. As for how I got started, I distinctly remember a big book my parents bought for me, filled with fun science projects to do at home. That might’ve even been the title. They were simple, easy-to-do projects involving basic concepts such as buoyancy and gravity, but they were more interesting to me than anything else. I just immersed myself.

Garth: Is science in your future?

Rahman: Definitely! My dream job is to become a pediatric neurologist. I definitely see science in my future and would love to continue working with adolescents and the adolescent brain. My research and this award is just one step to hopefully one day reaching that goal.

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The Parental Praise Paradox: Process not Person

Praise process and not product to keep from saddling your child with the cone of shame. Image: Flickr/Aidras

Praise process and not person to keep from saddling your child with the cone of shame. Image: Flickr/Aidras

Praise used to be a good thing — the praised child builds self-esteem! Now, as all of us enlightened GeekDad parents know, it’s a bad thing — the praised child loses the drive to struggle and succeed! So which is it? Is praise good or bad? A study published in the Journal of Experimental Psychology shows that especially with kids who already have low self-esteem, the answer is somewhat complex and surprisingly important. Here’s the short answer: it comes down to what you’re praising.

And it turns out there’s a big difference between person praise and process praise. In order to pick a peck of proper parental praise, ponder this: person praise reinforces a child’s self, focusing on how smart or strong or creative or funny or “good” a child is. Process praise reinforces a child’s behavior, focusing on how hard the child tries or the mechanisms a child uses on the way to a goal. It’s the difference between “you’re so smart!” and “wow, I can tell you worked really hard!”

A first study of 357 children found that the lower a child’s self-esteem, the more the balance of praise tended to tip toward personal — intuitively, adults seem to want to bolster these children’s self-esteem and do so with encouraging words aimed at personal traits that seem lacking. In fact, kids with low self-esteem got more than twice as much person praise than kids with high self-esteem — 30 percent and 14 percent of total praise, respectively. But then a second study of 313 children found that this personal praise predisposed children with low self-esteem to feel even more ashamed following failure. In kids with high self-esteem? Person praise didn’t hurt, but it didn’t help either.

Authors including Eddie Brummelman of Uthrecht University and Brad Bushman of the Ohio State University explain the results by saying, “Person praise seems to make children attribute failure to the self. Together, these findings suggest that adults, by giving person praise, may foster in children with low self-esteem the very emotional vulnerability they are trying to prevent.”

There’s even some strong language not usually seen in academic journals. I especially liked the following: “Person praise contributes to a self-perpetuating downward spiral of self-derogation.” D’oh!

Though there are few definite answers in parenting and while in a sample of 1,000 kids with low self-esteem you could almost certainly find a couple who benefit from person praise, here’s a pretty successful rule of thumb: with children who have low self-esteem, praise their behavior and not what you perceive as their ability. Disentangling praise from a child’s sense of self lets a child fail without being a failure.

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Egads! The Elusive Triple Pun!

Chocolate.Lab.Edited

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Study Dissects Nature and Nurture in Kids’ Reading Development

Image: Flickr/jinglejammer

Image: Flickr/jinglejammer

Admit it: you’re ever so slightly jealous of those glowing parents you’ve seen in infomercials gushing over their 2yo who reads Proust. In the original, for gosh sakes! A new study in the journal Child Development lets you largely off the hook. For better and for worse, your child’s reading level is not your fault. Or at least not in the “I should have read more French literature to my toddler” sense of the word fault. Instead, by the time your child reaches middle elementary school, it’s genetics and perhaps the school that determine reading level. Those summer reading programs you incentivized by buying Skylanders characters? Not so much.

To come to this somewhat predeterministic conclusion, researchers from The Ohio State University tested the environments and reading abilities of 371 twin pairs, every year for six years, from about ages 6 to 12. Then the group used something poetically named “phenotypic and genetically sensitive latent growth modeling” to turn children into bar-coded, automaton-like shells of their former selves — you know, in a statistical modeling kind of way. The inclusion of fraternal and identical twins (in this case, raised in the same environment) allowed the researchers to discover how much variance in reading level is due to genetic variance and how much to environmental differences — i.e., if identical twins read identically while fraternal twins read differently, you could say with some statistical gusto that genetics are to blame. However, if the differences are between families with different home environments and not necessarily between fraternal compared to identical twins, you could confidently blame parenting practices.

So what is nature and what is nurture in kids’ reading development?

IMHO, the answer is nothing short of stunning: genetics matter greatly. But genetics seem to matter especially after the first assessment in kindergarten. Take a second to sit with that: genetics play a late rather than an early role in a child’s reading development. The authors write:

“This suggests that the genetic influences related to how quickly or slowly a student grows in their reading skill are not the same as the genetic influences on their skill at the first assessment. In other words, some new genetic component related to growth is coming online after that first assessment wave, and it is influencing development.”

Please note that this is surprisingly comprehensible academese for researchers who use things like “phenotypic and genetically sensitive latent growth modeling.” Second, this is cool: something in the genome is turning on around kindergarten age that affects how quickly kids pick up the skill of reading. After this gene kicks in, the learning trajectories of the best readers tend to flatten and the trajectories of the worst readers tend to climb, until kids are (generally) re-sorted along the reading spectrum with little regard for their initial scores. Okay, the best readers *tend* to remain the best and the worst *tend* to remain the worst, but once kids hit school age, the influence of environment takes a major backseat to the influence of genetics.

Or, the authors point out, maybe instead of good parenting practices eventually giving way genetics as everyone regresses to the mean of their genes, this great norming of reading ability is school’s fault. The authors write that “at school entry, much of the variance in reading scores represents what has been occurring in the home.” But then kids start school and for the most part, everyone receives the same instruction. At that point “these environmental factors increase mean reading performance across all children,” the authors write. In school, it’s not only the children whose parents read to Proust in the original at bedtime who learn to read — it’s everyone. Or at least everyone is given (very generally) the same instruction and at that point, kids learn to the degree their genes permit and not to the degree you hope would be the result of years of selfless parenting.

One moral of the story is this: choose a school wisely, for while a true school will give your child reading, a false one may take it away — or at least flatten the growth trajectory of your Proust-exposed toddler.

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Studies: A Child’s Belief in Fantasy Requires A Nimble Mind

Image: Flickr/TomaszStasuik

Image: Flickr/TomaszStasuik

When my six- and four-year-old show irrational fears — say of getting a cup of water at night or that the neighbor’s dog is in fact Gmork from The NeverEnding Story – I yell, “Look out for ducks!” This is because once long ago on the shores of a bucolic pond, my bread-toting son, Leif, was surrounded by a mob of quackers looking for crackers. They closed in, bills clicking. There was much trauma (and very little rejoicing).

Now six, Leif knows that ducks are unlikely to peck the flesh from his bones, and this stupid parental catchphrase (“Look out for ducks!”) helps lighten worried moods and remind him that some things that seem scary at first turn out to be harmless and even fun. At six, Leif knows that the fantasy of killer ducks I project as a dumb dad joke is not reality. At four, my daughter lives my literal warning — if not immediately then certainly sometime soon, she believes the ducks will come for her. Likewise, she fears mascots. A costume that shows a human face, no matter how bloody and horrifying, is fine — but beware the Easter Bunny or the University of Colorado Boulder mascot, Chip the Buffalo. Without a human face, what we know as unreality is Kestrel’s reality. (And that jingling sound in my pocket is the quarters I keep ready to contribute freely to her therapy jar.)

How does Leif know that bloodthirsty zombie ducks and freaky, too-cute mascots are fantasy, while my daughter thinks they’re reality? A study published this week in the journal Child Development has some interesting answers (caution: full text behind paywall). First, contrary to the stereotype of kids as wide-eyed believers, authors Woolley and Ghossainy from U Texas, Austin write that, “Children are as likely to doubt as they are to believe.” Only, without an adult’s wellspring of experience in sorting fantasy from reality, a child’s probing can and does still lead to erroneous belief. “Children are, in many cases, skeptics, albeit often misguided ones,” the authors write.

For example, “Experimental work with young children reveals high levels of belief in Santa Claus,” the authors write. Imagine Venkman-like researchers with clipboards asking, “Do you believe in Santa Claus, little girl?” and then super-seriously charting the answer: “Hmmm, very interesting…” This is funny. But it’s also telling. To a large degree, kids don’t start out as believers — they start as skeptics and culture lures them into belief. Let’s look at the problem space, which the authors conceptualize as a “signal detection task” and sort into the following four possibilities:

1. Real and knows it’s real: HIT — Dinosaurs existed.

2. Real but thinks it’s unreal: MISS — believes dad must be joking about parasaurolophus.

3. False but thinks it’s real: FALSE ALARM — believes in the Easter Bunny.

4. False and knows it’s false: CORRECT REJECTION — “doubting the existence of dancing carrots,” the authors somewhat enigmatically write.

In Woolley’s and others’ studies, the default of young children is to cluster in categories 3 and 4 — to disbelieve even of reality. For example, researchers showed that young children tend to disbelieve in the reality of the movie March of the Penguins, with one kid saying, “If they wanted to make the film so real, why did they use special effects..?”

Then children in the 4-5yo range are easily tricked into belief, for example by the existence of presents under a tree, the replacement of a tooth with a toy, or the fact that their Halloween candy has been changed into a yo-yo overnight by an entity their parents call the Candy Witch (I’m not making this stuff up; these examples are from Woolley’s empirical experiments.) Finally though, older children cease to believe in Santa, the Tooth Fairy and the Candy Witch. Thus, “Level of belief in novel beings appears to form an inverted U-shaped developmental pattern, rather than the traditional pattern of a linear decrease with age.”

Kids disbelieve, then parents and culture trick them into belief, then canny kids wise up and once again disbelieve. When this happens to my kids, I will cry — but nonetheless, correct disbelief shows mature thought, specifically, “Accurately making reality status decisions [involves] a decreasing reliance on one’s own knowledge and experience and an increased consideration and use of a wide range of other sources of information,” the authors write. So it is the child who looks outside herself that learns to know fact from fiction. She considers not only her own experience, but all the evidence at hand and makes a considered judgment.

But what about the child who continues to believe? What of the middle-schooler who believes in dragons or the high-schooler who believes his P.E. teacher is an extraterrestrial, shape-shifting, blood-drinking alien (let’s not even get into religious belief here…)? Are these fantasy kids slow? Are they dumb? Woolley and Ghossainy suggest the opposite: “Belief in the communicative ability of novel supernatural beings may require more cognitive sophistication than [does] disbelief,” they write.

In other words, propping up a fantasy into the middle grades and beyond takes significant cognitive control to fend off the pesky whisperings of reality. We have four stages: naive disbelief, easily-tricked belief, considered disbelief and highly-evolved belief. In this model, only the most sophisticated thinkers can bolster their highly-evolved belief in dragons from the doubters.

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GeekDad Puzzle of the Week: Old Maid

Image: Flickr/ccarlstead

Image: Flickr/ccarlstead

Every other week, I write the GeekDad puzzle at WIRED. Here’s this week’s entry!

There are games that are fairly basic like chess, Othello and mahjong. And then there’s Old Maid. At my house, we’ve been playing some serious Maid and when I play, I play to win. Which is why I need your help. What I’m wondering is this: when if ever is it best to be dealt the Maid, and when is it best to remain blissfully unaware of her whereabouts until you’re safely out of cards and out of the game?

First a quick refresher: in Old Maid, cards are dealt and then players take turns picking blindly from other players’ hands. If a player ever has a match she lays down the matched cards. A player who lays down all her cards is safely out of the game. The player left holding the Old Maid at the end of the game loses. The massive complexity lies in the chance that the Maid will travel — potentially a couple times — before she is finally left old, alone and mumbling something about soft crackers.

Imagine the following scenarios. In each, is it best to be dealt the Old Maid or not? Each correct, well-explained answer will earn an entrance into the drawing for this week’s $50 ThinkGeek gift certificate!

1) A two-person, five-card game in which your opponent has the first draw.

2) A two-person, five-card game in which you have the first draw.

3) A two-person, seven-card game in which your opponent has the first draw.

4) A three-person, 10-card game in which you dealt and the person to your left has the first draw.

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Redesign, Spring Cleaning & the Best of the Old Blog

Wow, that redesign took WAAAAAY too long. In any case, I thought the coincidence of redesign launch (in progress) with the first day of Spring was the perfect time to condense the archive — i.e. for some kick-butt spring cleaning. And so instead of migrating over all the old stuff, I thought I’d post links to only the best of the best old blog content. Following are links to posts I’ve written — check out the MEDIA tab for things that have been written *about* me or that I’ve collaborated on in non-blog formats.

* New York Times, with John Tierney: A Refined Formula That Predicts Celebrity Marriages’ Doom

* WIRED GeekDad: Everything You Thought You Knew About Learning is Wrong

* WIRED Geekdad: A Scrabble Champ’s Primer on Crushing Words With Friends

* PsychologyToday: This is Your Brain on Multitasking

* BBC: How to Make Better Decisions

* Scientific American: How to Get a Positive Expected Rate of Return on a Lottery Ticket

* Science20.com: Holiday Math — a Simple Equation Decides How Much to Spend on Any Gift

* Huffington Post Science: Salk Study — Eating for Eight Hours Reduces Obesity and Diabetes Risk

* HowStuffWorks: How to See Who Views Your Facebook Profile

* Esquire: The Performance Matrix — a Mathematical Formula to Determine One’s Greatness

* Esquire: The Best Athletes Right Now — a Mathematical Formula

 

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