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　　On a chilly day last spring, a few dozen developers of childrens apps for phones and tablets gathered at an old beach resort in Monterey, California, to show off their games. One developer, a self-described visionary for puzzles who looked like a skateboarder-recently-turned-dad, displayed a jacked-up, interactive game called Puzzingo, intended for toddlers and inspired by his own sons desire to build and smash. Two 30 something women were eagerly seeking feedback for an app called Knock Knock Family, aimed at 1-to-4-year-olds. We want to make sure its easy enough for babies to understand, one explained.

　　The gathering was organized by Warren Buckleitner, a longtime reviewer of interactive childrens media who likes to bring together developers, researchers, and interest groupsand often plenty of kids, some still in diapers. It went by the Harry Potterish name Dust or Magic, and was held in a drafty old stone-and-wood hall barely a mile from the sea, the kind of place where Bathilda Bagshot might retire after packing up her wand. Buckleitner spent the breaks testing whether his own remote-control helicopter could reach the halls second story, while various children who had come with their parents looked up in awe and delight. But mostly they looked down, at the iPads and other tablets displayed around the hall like so many open boxes of candy. I walked around and talked with developers, and several paraphrased a famous saying of Maria Montessoris, a quote imported to ennoble a touch-screen age when very young kids, who once could be counted on only to chew on a square of aluminum, are now engaging with it in increasingly sophisticated ways: The hands are the instruments of mans intelligence.

　　What, really, would Maria Montessori have made of this scene? The 30 or so children here were not down at the shore poking their fingers in the sand or running them along mossy stones or digging for hermit crabs. Instead they were all inside, alone or in groups of two or three, their faces a few inches from a screen, their hands doing things Montessori surely did not imagine. A couple of 3-year-old girls were leaning against a pair of French doors, reading an interactive story called Ten Giggly Gorillas and fighting over which ape to tickle next. A boy in a nearby corner had turned his fingertip into a red marker to draw an ugly picture of his older brother. On an old oak table at the front of the room, a giant stuffed Angry Bird beckoned the children to come and test out tablets loaded with dozens of new apps. Some of the chairs had pillows strapped to them, since an 18-month-old might not otherwise be able to reach the table, though shed know how to swipe once she did.

　　Not that long ago, there was only the television, which theoretically could be kept in the parents bedroom or locked behind a cabinet. Now there are smartphones and iPads, which wash up in the domestic clutter alongside keys and gum and stray hair ties. Mom, everyone has technology but me! my 4-year-old son sometimes wails. And why shouldnt he feel entitled? In the same span of time it took him to learn how to say that sentence, thousands of kids apps have been developedthe majority aimed at preschoolers like him. To us , American childhood has undergone a somewhat alarming transformation in a very short time. But to him, it has always been possible to do so many things with the swipe of a finger, to have hundreds of games packed into a gadget the same size as Goodnight Moon.

　　In 2011, the American Academy of Pediatrics updated its policy on very young children and media. In 1999, the group had discouraged television viewing for children younger than 2, citing research on brain development that showed this age groups critical need for direct interactions with parents and other significant care givers. The updated report began by acknowledging that things had changed significantly since then. In 2006, 90 percent of parents said that their children younger than 2 consumed some form of electronic media. Nonetheless, the group took largely the same approach it did in 1999, uniformly discouraging passive media use, on any type of screen, for these kids. The 2011 report mentioned smart cell phone and new screen technologies, but did not address interactive apps. Nor did it broach the possibility that has likely occurred to those 90 percent of American parents, queasy though they might be: that some good might come from those little swiping fingers.

　　I had come to the developers conference partly because I hoped that this particular set of parents, enthusiastic as they were about interactive media, might help me out of this conundrum, that they might offer some guiding principle for American parents who are clearly never going to meet the academys ideals, and at some level do not want to. Perhaps this group would be able to articulate some benefits of the new technology that the more cautious pediatricians werent ready to address. I nurtured this hope until about lunchtime, when the developers gathering in the dining hall ceased being visionaries and reverted to being ordinary parents, trying to settle their toddlers in high chairs and get them to eat something besides bread.

　　I fell into conversation with a woman who had helped develop Montessori Letter Sounds, an app that teaches preschoolers the Montessori methods of spelling.

　　She was a former Montessori teacher and a mother of four. I myself have three children who are all fans of the touch screen. What games did her kids like to play?, I asked, hoping for suggestions I could take home.

　　They dont play all that much.

　　Really? Why not?

　　Because I dont allow it. We have a rule of no screen time during the week, unless its clearly educational.

　　No screen time? None at all? That seems at the outer edge of restrictive, even by the standards of my overcontrolling parenting set.

　　On the weekends, they can play. I give them a limit of half an hour and then stop. Enough. It can be too addictive, too stimulating for the brain.

　　Her answer so surprised me that I decided to ask some of the other developers who were also parents what their domestic ground rules for screen time were. One said only on airplanes and long car rides. Another said Wednesdays and weekends, for half an hour. The most permissive said half an hour a day, which was about my rule at home. At one point I sat with one of the biggest developers of e-book apps for kids, and his family. The toddler was starting to fuss in her high chair, so the mom did what many of us have done at that momentstuck an iPad in front of her and played a short movie so everyone else could enjoy their lunch. When she saw me watching, she gave me the universal tense look of mothers who feel they are being judged. At home, she assured me, I only let her watch movies in Spanish.

　　By their pinched reactions, these parents illuminated for me the neurosis of our age: as technology becomes ubiquitous in our lives, American parents are becoming more, not less, wary of what it might be doing to their children. Technological competence and sophistication have not, for parents, translated into comfort and ease. They have merely created yet another sphere that parents feel they have to navigate in exactly the right way. On the one hand, parents want their children to swim expertly in the digital stream that they will have to navigate all their lives; on the other hand, they fear that too much digital media, too early, will sink them. Parents end up treating tablets like precision surgical instruments, gadgets that might perform miracles for their childs IQ and help him win some nifty robotics competitionbut only if they are used just so. Otherwise, their child could end up one of those sad, pale creatures who cant make eye contact and has an avatar for a girlfriend.

　　Norman Rockwell never painted Boy Swiping Finger on Screen, and our own vision of a perfect childhood has never adjusted to accommodate that now-common tableau. Add to that our modern fear that every parenting decision may have lasting consequencesthat every minute of enrichment lost or mindless entertainment indulged will add up to some permanent handicap in the futureand you have deep guilt and confusion. To date, no body of research has definitively proved that the iPad will make your preschooler smarter or teach her to speak Chinese, or alternatively that it will rust her neural circuitrythe device has been out for only three years, not much more than the time it takes some academics to find funding and gather research subjects. So whats a parent to do?

　　In 2001, the education and technology writer Marc Prensky popularized the term digital natives to describe the first generations of children growing up fluent in the language of computers, video games, and other technologies. This term took on a whole new significance in April 2010, when the iPad was released. iPhones had already been tempting young children, but the screens were a little small for pudgy toddler hands to navigate with ease and accuracy. Plus, parents tended to be more possessive of their phones, hiding them in pockets or purses. The iPad was big and bright, and a case could be made that it belonged to the family. Researchers who study childrens media immediately recognized it as a game changer.

　　Previously, young children had to be shown by their parents how to use a mouse or a remote, and the connection between what they were doing with their hand and what was happening on the screen took some time to grasp. But with the iPad, the connection is obvious, even to toddlers. Touch technology follows the same logic as shaking a rattle or knocking down a pile of blocks: the child swipes, and something immediately happens. A rattle on steroids, is what Buckleitner calls it. All of a sudden a finger could move a bus or smush an insect or turn into a big wet gloopy paintbrush. To a toddler, this is less magic than intuition. At a very young age, children become capable of what the psychologist Jerome Bruner called enactive representation they classify objects in the world not by using words or symbols but by making gesturessay, holding an imaginary cup to their lips to signify that they want a drink. Their hands are a natural extension of their thoughts.

　　Norman Rockwell never painted Boy Swiping Finger on Screen, and our own vision of a perfect childhood has never adjusted to fit that now-common tableau.

　　I have two older children who fit the early idea of a digital nativethey learned how to use a mouse or a keyboard with some help from their parents and were well into school before they felt comfortable with a device in their lap. My youngest child is a whole different story. He was not yet 2 when the iPad was released. As soon as he got his hands on it, he located the Talking Baby Hippo app that one of my older children had downloaded. The little purple hippo repeats whatever you say in his own squeaky voice, and responds to other cues. My son said his name ; Baby Hippo repeated it back. Gideon poked Baby Hippo; Baby Hippo laughed. Over and over, it was funny every time. Pretty soon he discovered other apps. Old MacDonald, by Duck Duck Moose, was a favorite. At first he would get frustrated trying to zoom between screens, or not knowing what to do when a message popped up. But after about two weeks, he figured all that out. I must admit, it was eerie to see a child still in diapers so competent and intent, as if he were forecasting his own adulthood. Technically I was the owner of the iPad, but in some ontological way it felt much more his than mine.

　　Without seeming to think much about it or resolve how they felt, parents began giving their devices over to their children to mollify, pacify, or otherwise entertain them. By 2010, two-thirds of children ages 4 to 7 had used an iPhone, according to the Joan Ganz Cooney Center, which studies childrens media. The vast majority of those phones had been lent by a family member; the centers researchers labeled this the pass-back effect, a name that captures well the reluctant zone between denying and giving.

　　The market immediately picked up on the pass-back effect, and the opportunities it presented. In 2008, when Apple opened up its App Store, the games started arriving at the rate of dozens a day, thousands a year. For the first 23 years of his career, Buckleitner had tried to be comprehensive and cover every childrens game in his publication, Childrens Technology Review. Now, by Buckleitners loose count, more than 40,000 kids games are available on iTunes, plus thousands more on Google Play. In the iTunes Education category, the majority of the top-selling apps target preschool or elementary-age children. By age 3, Gideon would go to preschool and tune in to what was cool in toddler world, then come home, locate the iPad, drop it in my lap, and ask for certain games by their approximate description: Tea? Spill?

　　As these delights and diversions for young children have proliferated, the pass-back has become more uncomfortable, even unsustainable, for many parents:

　　Hed gone to this state where youd call his name and he wouldnt respond to it, or you could snap your fingers in front of his face

　　But, you know, we ended up actually taking the iPad away forfrom him largely because, you know, this example, this thing we were talking about, about zoning out. Now, he would do that, and my wife and I would stare at him and think, Oh my God, his brain is going to turn to mush and come oozing out of his ears. And it concerned us a bit.

　　This is Ben Worthen, a Wall Street Journal reporter, explaining recently to NPRs Diane Rehm why he took the iPad away from his son, even though it was the only thing that could hold the boys attention for long periods, and it seemed to be sparking an interest in numbers and letters. Most parents can sympathize with the disturbing sight of a toddler, who five minutes earlier had been jumping off the couch, now subdued and staring at a screen, seemingly hypnotized. In the somewhat alarmist Endangered Minds: Why Children Dont Thinkand What We Can Do About It, author Jane Healy even gives the phenomenon a name, the zombie effect, and raises the possibility that television might suppress mental activity by putting viewers in a trance.

　　Ever since viewing screens entered the home, many observers have worried that they put our brains into a stupor. An early strain of research claimed that when we watch television, our brains mostly exhibit slow alpha wavesindicating a low level of arousal, similar to when we are daydreaming. These findings have been largely discarded by the scientific community, but the myth persists that watching television is the mental equivalent of, as one Web site put it, staring at a blank wall. These common metaphors are misleading, argues Heather Kirkorian, who studies media and attention at the University of Wisconsin at Madison. A more accurate point of comparison for a TV viewers physiological state would be that of someone deep in a book, says Kirkorian, because during both activities we are still, undistracted, and mentally active.

　　Because interactive media are so new, most of the existing research looks at children and television. By now, there is universal agreement that by at least age 2 and a half, children are very cognitively active when they are watching TV, says Dan Anderson, a childrens-media expert at the University of Massachusetts at Amherst. In the 1980s, Anderson put the zombie theory to the test, by subjecting roughly 100 children to a form of TV hell. He showed a group of children ages 2 to 5 a scrambled version of Sesame Street: he pieced together scenes in random order, and had the characters speak backwards or in Greek. Then he spliced the doctored segments with unedited ones and noted how well the kids paid attention. The children looked away much more frequently during the scrambled parts of the show, and some complained that the TV was broken. Anderson later repeated the experiment with babies ages 6 months to 24 months, using Teletubbies. Once again he had the characters speak backwards and chopped the action sequences into a nonsensical ordershowing, say, one of the Teletubbies catching a ball and then, after that, another one throwing it. The 6- and 12-month-olds seemed unable to tell the difference, but by 18 months the babies started looking away, and by 24 months they were turned off by programming that did not make sense.

　　Andersons series of experiments provided the first clue that even very young children can be discriminating viewersthat they are not in fact brain-dead, but rather work hard to make sense of what they see and turn it into a coherent narrative that reflects what they already know of the world. Now, 30 years later, we understand that children can make a lot of inferences and process the information, says Anderson. And they can learn a lot, both positive and negative. Researchers never abandoned the idea that parental interaction is critical for the development of very young children. But they started to see TV watching in shades of gray. If a child never interacts with adults and always watches TV, well, that is a problem. But if a child is watching TV instead of, say, playing with toys, then that is a tougher comparison, because TV, in the right circumstances, has something to offer.

　　How do small children actually experience electronic media, and what does that experience do to their development? Since the 80s, researchers have spent more and more time consulting with television programmers to study and shape TV content. By tracking childrens reactions, they have identified certain rules that promote engagement: stories have to be linear and easy to follow, cuts and time lapses have to be used very sparingly, and language has to be pared down and repeated. A perfect example of a well-engineered show is Nick Jr.s Blues Clues, which aired from 1996 to 2006. Each episode features Steve and Blue, a cartoon puppy, solving a mystery. Steve talks slowly and simply; he repeats words and then writes them down in his handy-dandy notebook. There are almost no cuts or unexplained gaps in time. The great innovation of Blues Clues is something called the pause. Steve asks a question and then pauses for about five seconds to let the viewer shout out an answer. Small children feel much more engaged and invested when they think they have a role to play, when they believe they are actually helping Steve and Blue piece together the clues. A longitudinal study of children older than 2 and a half showed that the ones who watched Blues Clues made measurably larger gains in flexible thinking and problem solving over two years of watching the show.

　　For toddlers, however, the situation seems slightly different. Children younger than 2 and a half exhibit what researchers call a video deficit. This means that they have a much easier time processing information delivered by a real person than by a person on videotape. In one series of studies, conducted by Georgene Troseth, a developmental psychologist at Vanderbilt University, children watched on a live video monitor as a person in the next room hid a stuffed dog. Others watched the exact same scene unfold directly, through a window between the rooms. The children were then unleashed into the room to find the toy. Almost all the kids who viewed the hiding through the window found the toy, but the ones who watched on the monitor had a much harder time.

　　A natural assumption is that toddlers are not yet cognitively equipped to handle symbolic representation. But there is another way to interpret this particular phase of development. Toddlers are skilled at seeking out what researchers call socially relevant information. They tune in to people and situations that help them make a coherent narrative of the world around them. In the real world, fresh grass smells and popcorn tumbles and grown-ups smile at you or say something back when you ask them a question. On TV, nothing like that happens. A TV is static and lacks one of the most important things to toddlers, which is a two-way exchange of information, argues Troseth.

　　A few years after the original puppy-hiding experiment, in 2004, Troseth reran it, only she changed a few things. She turned the puppy into a stuffed Piglet . More important, she made the video demonstration explicitly interactive. Toddlers and their parents came into a room where they could see a personthe researcheron a monitor. The researcher was in the room where Piglet would be hidden, and could in turn see the children on a monitor. Before hiding Piglet, the researcher effectively engaged the children in a form of media training. She asked them questions about their siblings, pets, and toys. She played Simon Says with them and invited them to sing popular songs with her. She told them to look for a sticker under a chair in their room. She gave them the distinct impression that shethis person on the screencould interact with them, and that what she had to say was relevant to the world they lived in. Then the researcher told the children she was going to hide the toy and, after she did so, came back on the screen to instruct them where to find it. That exchange was enough to nearly erase the video deficit. The majority of the toddlers who participated in the live video demonstration found the toy.

　　Blues Clues was on the right track. The pause could trick children into thinking that Steve was responsive to them. But the holy grail would be creating a scenario in which the guy on the screen did actually respondin which the toddler did something and the character reliably jumped or laughed or started to dance or talk back.

　　Like, for example, when Gideon said Giddy and Talking Baby Hippo said Giddy back, without fail, every time. That kind of contingent interaction is what captivates a toddler and can be a significant source of learning for even very young childrenlearning that researchers hope the children can carry into the real world. Its not exactly the ideal social partner the American Academy of Pediatrics craves. Its certainly not a parent or caregiver. But its as good an approximation as weve ever come up with on a screen, and its why childrens-media researchers are so excited about the iPads potential.

　　A couple researchers from the Childrens Media Center at Georgetown University show up at my house, carrying an iPad wrapped in a bright-orange case, the better to tempt Gideon with. They are here at the behest of Sandra Calvert, the centers director, to conduct one of several ongoing studies on toddlers and iPads. Gideon is one of their research subjects. This study is designed to test whether a child is more likely to learn when the information he hears comes from a beloved and trusted source. The researchers put the iPad on a kitchen chair; Gideon immediately notices it, turns it on, and looks for his favorite app. They point him to the one they have invented for the experiment, and he dutifully opens it with his finger.

　　Onto the screen comes a floppy kangaroo-like puppet, introduced as DoDo. He is a nobody in the child universe, the puppet equivalent of some random guy on late-night public-access TV. Gideon barely acknowledges him. Then the narrator introduces Elmo. Hi, says Elmo, waving. Gideon says hi and waves back.

　　An image pops up on the screen, and the narrator asks, What is this?

　　This is a banana, says DoDo.

　　This is a grape, says Elmo.

　　I smile with the inner glow of a mother who knows her child is about to impress a couple strangers. My little darling knows what a banana is. Of course he does! Gideon presses on Elmo. As far as I know, hes never watched Sesame Street, never loved an Elmo doll or even coveted one at the toy store. Nonetheless, he is tuned in to the signals of toddler world and, apparently, has somehow figured out that Elmo is a supreme moral authority. His relationship with Elmo is more important to him than what he knows to be the truth. On and on the game goes, and sometimes Gideon picks Elmo even when Elmo says an orange is a pear. Later, when the characters both give made-up names for exotic fruits that few children would know by their real name, Gideon keeps doubling down on Elmo, even though DoDo has been more reliable.

　　By age 3, Gideon would tune in to what was cool in toddler world, then drop the iPad in my lap and ask for certain games by their approximate description.

　　As it happens, Gideon was not in the majority. This summer, Calvert and her team will release the results of their study, which show that most of the time, children around age 32 months go with the character who is telling the truth, whether its Elmo or DoDoand quickly come to trust the one whos been more accurate when the children dont already know the answer. But Calvert says this merely suggests that toddlers have become even more savvy users of technology than we had imagined. She had been working off attachment theory, and thought toddlers might value an emotional bond over the correct answer. But her guess is that something about tapping the screen, about getting feedback and being corrected in real time, is itself instructive, and enables the toddlers to absorb information accurately, regardless of its source.

　　Calvert takes a balanced view of technology: she works in an office surrounded by hardcover books, and she sometimes edits her drafts with pen and paper. But she is very interested in how the iPad can reach children even before theyre old enough to access these traditional media.

　　People say we are experimenting with our children, she told me. But from my perspective, its already happened, and theres no way to turn it back. Childrens lives are filled with media at younger and younger ages, and we need to take advantage of what these technologies have to offer. Im not a Pollyanna. Im pretty much a realist. I look at what kids are doing and try to figure out how to make the best of it.

　　Despite the participation of Elmo, Calverts research is designed to answer a series of very responsible, high-minded questions: Can toddlers learn from iPads? Can they transfer what they learn to the real world? What effect does interactivity have on learning? What role do familiar characters play in childrens learning from iPads? All worthy questions, and important, but also all considered entirely from an adults point of view. The reason many kids apps are grouped under Education in the iTunes store, I suspect, is to assuage parents guilt . If small children had more input, many Education apps would logically fall under a category called Kids or Kids Games. And many more of the games would probably look something like the apps designed by a Swedish game studio named Toca Boca.

　　The founders, Emil Ovemar and Bj rn Jeffery, work for Bonnier, a Swedish media company. Ovemar, an interactive-design expert, describes himself as someone who never grew up. He is still interested in superheroes, Legos, and animated movies, and says he would rather play stuck-on-an-island with his two kids and their cousins than talk to almost any adult. Jeffery is the companys strategist and front man; I first met him at the conference in California, where he was handing out little temporary tattoos of the Toca Boca logo, a mouth open and grinning, showing off rainbow-colored teeth.

　　In late 2010, Ovemar and Jeffery began working on a new digital project for Bonnier, and they came up with the idea of entering the app market for kids. Ovemar began by looking into the apps available at the time. Most of them were disappointingly instructive, he founddrag the butterfly into the net, that sort of thing. They were missing creativity and imagination. Hunting for inspiration, he came upon Frank and Theresa Caplans 1973 book The Power of Play, a quote from which he later e-mailed to me:

　　What is it that often puts the B student ahead of the A student in adult life, especially in business and creative professions? Certainly it is more than verbal skill. To create, one must have a sense of adventure and playfulness. One needs toughness to experiment and hazard the risk of failure. One has to be strong enough to start all over again if need be and alert enough to learn from whatever happens. One needs a strong ego to be propelled forward in ones drive toward an untried goal. Above all, one has to possess the ability to play!

　　Ovemar and Jeffery hunted down toy catalogs from as early as the 1950s, before the age of exploding brand tie-ins. They made a list of the blockbusters over the decadesthe first Tonka trucks, the Frisbee, the Hula-Hoop, the Rubiks Cube. Then they made a list of what these toys had in common: None really involved winning or losing against an opponent. None were part of an effort to create a separate child world that adults were excluded from, and probably hostile toward; they were designed more for family fun. Also, they were not really meant to teach you something specificthey existed mostly in the service of having fun.

　　In 2011 the two developers launched Toca Tea Party. The game is not all that different from a real tea party. The iPad functions almost like a tea table without legs, and the kids have to invent the rest by, for example, seating their own plushies or dolls, one on each side, and then setting the theater in motion. First, choose one of three tablecloths. Then choose plates, cups, and treats. The treats are not what your mom would feed you. They are chocolate cakes, frosted doughnuts, cookies. Its very easy to spill the tea when you pour or take a sip, a feature added based on kids suggestions during a test play . At the end, a sink filled with soapy suds appears, and you wash the dishes, which is also part of the fun, and then start again. Thats it. The game is either very boring or terrifically exciting, depending on what you make of it. Ovemar and Jeffery knew that some parents wouldnt get it, but for kids, the game would be fun every time, because its dependent entirely on imagination. Maybe today the stuffed bear will be naughty and do the spilling, while naked Barbie will pile her plate high with sweets. The child can take on the voice of a character or a scolding parent, or both. Theres no winning, and theres no reward. Like a game of stuck-on-an-island, it can go on for five minutes or forever.

　　Soon after the release of Toca Tea Party, the pair introduced Toca Hair Salon, which is still to my mind the most fun game out there. The salon is no Fifth Avenue spa. Its a rundown-looking place with cracks in the wall. The aim is not beauty but subversion. Cutting off hair, like spilling, is on the list of things kids are not supposed to do. You choose one of the odd-looking people or creatures and have your way with its hair, trimming it or dyeing it or growing it out. The blow-dryer is genius; it achieves the same effect as Tadao Cerns Blow Job portraits, which depict peoples faces getting wildly distorted by high winds. In August 2011, Toca Boca gave away Hair Salon for free for nearly two weeks. It was downloaded more than 1 million times in the first week, and the company took off. Today, many Toca Boca games show up on lists of the most popular education apps.

　　Are they educational? Thats the perspective of the parents, Jeffery told me at the back of the grand hall in Monterey. Is running around on the lawn educational? Every part of a childs life cant be held up to that standard. As we talked, two girls were playing Toca Tea Party on the floor nearby. One had her stuffed dragon at a plate, and he was being especially naughty, grabbing all the chocolate cake and spilling everything. Her friend had taken a little Lego construction man and made him the good guy who ate neatly and helped do the dishes. Should they have been outside at the beach? Maybe, but the day would be long, and they could go outside later.

　　The more I talked with the developers, the more elusive and unhelpful the Education category seemed. Buckleitner calls his conference Dust or Magic to teach app developers a more subtle concept than pedagogy. By magic, Buckleitner has in mind an app that makes childrens fingers move and their eyes light up. By dust, he means something that was obviously designed by an adult. Some educational apps, I wouldnt wish on the naughtiest toddler. Take, for example, Counting With the Very Hungry Caterpillar, which turns a perfectly cute book into a tedious app that asks you to please eat 1 piece of chocolate cake so you can count to one.

　　Before the conference, Buckleitner had turned me on to Noodle Words, an app created by the California designer and childrens-book writer Mark Schlichting. The app is explicitly educational. It teaches you about active verbsspin, sparkle, stretch. It also happens to be fabulous. You tap a box, and a verb pops up and gets acted out by two insect friends who have the slapstick sensibility of the Three Stooges. If the word is shake, they shake until their eyeballs rattle. I tracked down Schlichting at the conference, and he turned out to be a little like Maurice Sendaklike many good childrens writers, that is: ruled by id and not quite tamed into adulthood. The app, he told me, was inspired by a dream hed had in which he saw the word and floating in the air and sticking to other words like a magnet. He woke up and thought, What if words were toys?

　　During the course of reporting this story, I downloaded dozens of apps and let my children test them out. They didnt much care whether the apps were marketed as educational or not, as long as they were fun. Without my prompting, Gideon fixated on a game called LetterSchool, which teaches you how to write letters more effectively and with more imagination than any penmanship textbooks Ive ever encountered. He loves the Toca Boca games, the Duck Duck Moose games, and random games like Bugs and Buttons. My older kids love The Numberlys, a dark fantasy creation of illustrators who have worked with Pixar that happens to teach the alphabet. And all my kids, including Gideon, play Cut the Rope a lot, which is not exclusively marketed as a kids game. I could convince myself that the game is teaching them certain principles of physicsits not easy to know the exact right place to slice the rope. But do I really need that extra convincing? I like playing the game; why shouldnt they?

　　Every new medium has, within a short time of its introduction, been condemned as a threat to young people. Pulp novels would destroy their morals, TV would wreck their eyesight, video games would make them violent. Each one has been accused of seducing kids into wasting time that would otherwise be spent learning about the presidents, playing with friends, or digging their toes into the sand. In our generation, the worries focus on kids brainpower, about unused synapses withering as children stare at the screen. People fret about television and ADHD, although that concern is largely based on a single study that has been roundly criticized and doesnt jibe with anything we know about the disorder.

　　There are legitimate broader questions about how American children spend their time, but all you can do is keep them in mind as you decide what rules to set down for your own child. The statement from the American Academy of Pediatrics assumes a zero-sum game: an hour spent watching TV is an hour not spent with a parent. But parents know this is not how life works. There are enough hours in a day to go to school, play a game, and spend time with a parent, and generally these are different hours. Some people can get so drawn into screens that they want to do nothing else but play games. Experts say excessive video gaming is a real problem, but they debate whether it can be called an addiction and, if so, whether the term can be used for anything but a small portion of the population. If your child shows signs of having an addictive personality, you will probably know it. One of my kids is like that; I set stricter limits for him than for the others, and he seems to understand why.

　　In her excellent book Screen Time, the journalist Lisa Guernsey lays out a useful frameworkwhat she calls the three Csfor thinking about media consumption: content, context, and your child. She poses a series of questionsDo you think the content is appropriate? Is screen time a relatively small part of your childs interaction with you and the real world?and suggests tailoring your rules to the answers, child by child. One of the most interesting points Guernsey makes is about the importance of parents attitudes toward media. If they treat screen time like junk food, or like a magazine at the hair salongood for passing the time in a frivolous way but nothing morethen the child will fully absorb that attitude, and the neurosis will be passed to the next generation.

　　The war is over. The natives won. So says Marc Prensky, the education and technology writer, who has the most extreme parenting philosophy of anyone I encountered in my reporting. Prenskys 7-year-old son has access to books, TV, Legos, Wiiand Prensky treats them all the same. He does not limit access to any of them. Sometimes his son plays with a new app for hours, but then, Prensky told me, he gets tired of it. He lets his son watch TV even when he personally thinks its a stupid waste. SpongeBob SquarePants, for example, seems like an annoying, pointless show, but Prensky says he used the relationship between SpongeBob and Patrick, his starfish sidekick, to teach his son a lesson about friendship. We live in a screen age, and to say to a kid, Id love for you to look at a book but I hate it when you look at the screen is just bizarre. It reflects our own prejudices and comfort zone. Its nothing but fear of change, of being left out.

　　Prenskys worldview really stuck with me. Are books always, in every situation, inherently better than screens? My daughter, after all, often uses books as a way to avoid social interaction, while my son uses the Wii to bond with friends. I have to admit, I had the exact same experience with SpongeBob. For a long time I couldnt stand the show, until one day I got past the fact that the show was so loud and frenetic and paid more attention to the story line, and realized I too could use it to talk with my son about friendship. After I first interviewed Prensky, I decided to conduct an experiment. For six months, I would let my toddler live by the Prensky rules. I would put the iPad in the toy basket, along with the remote-control car and the Legos. Whenever he wanted to play with it, I would let him.

　　Gideon tested me the very first day. He saw the iPad in his space and asked if he could play. It was 8 a.m. and we had to get ready for school. I said yes. For 45 minutes he sat on a chair and played as I got him dressed, got his backpack ready, and failed to feed him breakfast. This was extremely annoying and obviously untenable. The week went on like thisGideon grabbing the iPad for two-hour stretches, in the morning, after school, at bedtime. Then, after about 10 days, the iPad fell out of his rotation, just like every other toy does. He dropped it under the bed and never looked for it. It was completely forgotten for about six weeks.

　　Now he picks it up every once in a while, but not all that often. He has just started learning letters in school, so hes back to playing LetterSchool. A few weeks ago his older brother played with him, helping him get all the way through the uppercase and then lowercase letters. It did not seem beyond the range of possibility that if Norman Rockwell were alive, he would paint the two curly-haired boys bent over the screen, one small finger guiding a smaller one across, down, and across again to make, in their triumphant finale, the small z.