Buy a lot of books.
That seems kind of obvious, right? But what’s surprising, according to a new study published in the journal Research in Social Stratification and Mobility, is just how strong the correlation is between a child’s academic achievement and the number of books his or her parents own. It’s even more important than whether the parents went to college or hold white-collar jobs.
Books matter. A lot.
The study was conducted over 20 years, in 27 countries, and surveyed more than 70,000 people. Researchers found that children who grew up in a home with more than 500 books spent 3 years longer in school than children whose parents had only a few books. Also, a child whose parents have lots of books is nearly 20-percent more likely to finish college.
For comparison purposes, the children of educated parents (defined as people with at least 15 years of schooling) were 16-percent more likely than the children of less-educated parents to get their college degrees. Formal education matters, but not as much as books.
From the paper:
Thus it seems that scholarly culture, and the taste for books that it brings, flows from generation to generation largely of its own accord, little affected by education, occupational status, or other aspects of class … Parents give their infants toy books to play with in the bath; read stories to little children at bed-time; give books as presents to older children; talk, explain, imagine, fantasize, and play with words unceasingly. Their children get a taste for all this, learn the words, master the skills, buy the books. And that pays off handsomely in schools.
Even a relatively small number of books can make a difference: A child whose family has 25 books will, on average, complete two more years of school than a child whose family is sadly book-less.
I wonder what e-book readers like the Kindle will mean to these statistics. On the plus side, a lot of e-books are free and those that aren’t are often discounted, so a family with a Kindle might be able to afford more books (assuming they can pony up for the device). But the books aren’t as easy to share and you probably don’t want your 5-year-old dribbling juice onto your fancy expensive gadget.
Plus, the Kindle doesn’t look as nice on a shelf.
(The article isn’t available online, but you can read the abstract here. The authors of the paper are M.D.R. Evans, Jonathan Kelley, Joanna Sikorac, and Donald J. Treimand.)







39 Responses to Want Smart Kids? Here’s What to Do
physicsprof - May 21, 2010 at 3:25 pm
Old and silly argument. Correlation does not mean causation. The smarter the parents the more likely they are to be well-educated and to have lots of books. Also they are more likely to pass ‘smart’ genes to their children. Or is it too politically incorrect to admit the obvious?
danhimes - May 21, 2010 at 3:32 pm
Dang, physicsprof, I wish I had read your post before I ordered 501 books on Amazon. But seriously, it doesn’t even have to be a non-pc argument. For all we know parents having lots of books may signify that the parents understand that questions are answerable, and that knowlege may be sought. This may serve as a motivating factor for the children. In other words, it simply may be a sign of a family culture where, instead of saying “I wish I knew,” the kids learn to say “let’s find out!”
11147066 - May 21, 2010 at 3:38 pm
We have to see the statistics, to see what they controlled for. The study is not necessarily bs. There are different kinds of “smarts” and different kinds of schooling, but obviously being surrounded by books (regardless of why they were accumulated) is going to encourage “book learning.”
physicsprof - May 21, 2010 at 3:44 pm
Danhimes, I’ll buy them from you for 50% of the price.As to your (and #3′s) argument, here is a quote from “Freakonomics”:”But how then to explain another famous study, the Colorado Adoption Project, which followed the lives of 245 babies put for adoption and found virtually no correlation between the child’s personality traits and those of his adoption parents.”
tlgriffith18 - May 21, 2010 at 3:52 pm
For those who doubt, neither of my parents went to college, but I grew up in a home with a ton of books, none of which were “off limits” for me to read. I consider my love of reading much more significant in my ability to complete an advanced degree than what my parents did or didn’t do. And working with adult learners, I see those students who freely admit they hate reading are also those students who are most likely to struggle academically. I suspect there is a link between books in the home and the likely encouragement to read (whether explicit or implicit) and academic success.
singletonj - May 21, 2010 at 4:12 pm
Validation at last…no longer am I just a compulsive children’s bookbuyer but a caring parent.
andrew46 - May 21, 2010 at 4:19 pm
Actually, if you have access to Science Direct you can view the preprint of the paper. Their results do consider IQ of parents as a variable and they report this as less predictive than number of books at home, so this finding is not just a PC statement of the obvious fact that smart parents tend to have smart offspring.
11179188 - May 21, 2010 at 4:22 pm
I often wonder who and what I’d be if I’d grown up in a home without books. Neither of my parents were intellectual and we never had conversations about ideas, but we all read constantly. And while their reading taste was pedestrian, it’s a habit that continues in each of us to this day. I beleive I owe much of my success in college and beyond to a love of reading.
greeneyeshade - May 21, 2010 at 4:49 pm
My dad had a couple of bookcases of books; I doubt there were 500 though. Some of those books were two sets of encyclopedias which, apropos to #2′s point, we used frequently to explore things we wondered about and to write homework papers.It would be interesting to see in another 20 years or so if access to the internet has the same effect.
davidriese - May 21, 2010 at 4:56 pm
I realize that this is a bit off-topic, but William Deresiewicz has a wonderful essay in the most recent issue of American Scholar. This essay, entitled “Solitude and Leadership: If You Want Others to Follow, Learn To Be Alone With Your Thoughts” is an adaptation of a lecture delivered to the plebe class at the US Military Academy (West Point) last October. Deresiewicz postulates that leadership is a function of solitary analysis, introspection, concentration, and vision. Moreover, he advocates a “great books” approach to foster these activities, for “the great books, the ones you find on a syllabus, the ones people have continued to read, don’t reflect the conventional wisdom of their day. They say things that have the permanent power to disrupt our habits of thought. They were revolutionary in their own time, and they are still revolutionary today.” His essay is a moving argument for the power of reading.
bstevens - May 21, 2010 at 5:04 pm
OK. We five kids grew up in the same house with the same parents (one a college grad and one a college dropout) and the same number of books, maybe a couple dozen of them plus maybe 30 children’s books, all of which were fully available to us. Two of us are avid readers and have advanced degrees and work at colleges. Two of us put up with books, but don’t read much; one has a BBA and the other a nursing diploma. One is an artist who does art all the time and reads quite selectively, and has a BA. All of us have read to our children since their birth, and every one of our children (10) has now finished college, six with masters degrees and one just finishing a PhD, and their love of reading varies greatly among them, from art historians to engineers. How do you sort out the cause and effect in that tangle??
jegraves - May 21, 2010 at 7:04 pm
Fast-forward 20 years. The headline reads: “Kids College Success Correlated with Parent’s Kindle Downloads”.
csgirl - May 21, 2010 at 8:14 pm
Kindle downloads won’t be the same because kids won’t experience the physical presence of books all around them. Plus, Kindles look not too much different from the Gameboys and other electronic devices that kids, especially boys, are addicted to. Kids won’t see their parents leafing through pages of text, and won’t be able to pull down books into piles around them(as my kids did when they were toddlers)
cofcssm - May 21, 2010 at 11:32 pm
I can remember the home I grew up in….my mother putting books in our hands that were above us (Kirkegaard, plays of Ibsen) and even the Childcraft series….ah the joys of “The Highwayman”…(‘and the Moon was a ghostly galleon, tossed on stormy seas”….)…her love of language and the books we had in our home instilled a love of reading, poetry and literature that spurred us (my two siblings and I) to academic excellence. 500? maybe not, but plenty of books that were always available….FL Prof
richardtaborgreene - May 22, 2010 at 1:40 am
Whew—I was getting caught up in talking with my kids, instructing them, renting other instructors for them, encouraging them to sacrifice nows for laters, and a host of other correlationally useless activities. NOW I will just buy all the books I want, scatter them around, and do nothing else. Science is wonderful, it liberates us all.
your_rights - May 22, 2010 at 5:50 am
To paraphrase one of the Chronicle’s authors: Gee Wiz Billy Bob. Did ya know readin and writin might make ya smart.
bdbailey - May 22, 2010 at 9:17 am
Physics prof -Freakonomics was talking about personality. Love of reading and learning may well be a learned behavior.I think that it doesn’t matter very much what kids read as long as they read. My son devours science fiction and fantasy. When I was growing up, the only books we had were a set of encyclopedias. I read those, comic books and MAD magazine.
mrmars - May 22, 2010 at 12:12 pm
I grew up in an apartment with exactly four books (three of which I still have), a dictionary, “Up Front,” a book of WWII Army cartoons by Bill Mauldin, “Quo Vadis”by Sienkiewicz (which I started a few times and never finished), and “Best Stories from the Best Book” by Ella King Sanders (has some neat bean plant germination drawings along with LOTS of illustrations from the Good Book and religious admonitions for the inquiring three-year old). Is it any wonder that I graduated about thirty from the bottom of my high school class? And all this time I thought I had a bad attitude! If only my single mom (an 8th grade graduate-bless her memory) had spent more of the $3,000 she made a year on books I might have gone to Harvard! We did, however, have a wonderful small branch library a city block away. Maybe that’s why I’m not pushing a broom today (although according to many of my students I should be). At one time I couldn’t even spell Ph.D. (thank God for spell-checkers) and now I are one! Thank God library cards are free.
mystery345 - May 22, 2010 at 1:51 pm
csgirl #13 – I now have a Kindle and I have it open all the time. My kids see me read it constantly. They hear my husband complain every time the credit card bills come – “Did you really have to buy 20 books last month???”. But one thing I can do with the kindle that I cannot do with regular books is tell my son that I am going to send him a book sample for his computer and to take a look and see what he thinks. Since he has his laptop open all the time he can easily open the Amazon Kindle for PC and sample books to his heart’s content. It is kind of like hanging out in a bookstore that is open 24/7. I think that as eReaders will become more and more popular, we will just have to wait and see what that means for education. Since kids like gadgets an eReader may actually encourage a child to read. It is a new world. We cannot assume the old technology, in this case paper and ink, will always be the best. Paper and ink are on the way out, like it or not. Gadgets are in and if a gadget encourages a kid to sample books for free or to read free classics, what can be better?
physicsprof - May 22, 2010 at 2:41 pm
Bdbailey (#17), Freakonomics talked exactly about the subject — whether having books at home would make any difference, see starting from page 172. It also talked about Blagojevich $26 mil a year initiative to mail books to all children of Illinois.
mbelvadi - May 22, 2010 at 10:41 pm
I wonder if the effect the study measures can tease apart access to books generally vs. specifically in the home provided by the parents/guardians. I’m thinking of all the inner city type programs like RIF (that’s what it was when I was young, not sure of today’s equivalents), public libraries using bookmobiles and the like to get deprived kids access to lots of books despite their intellectually impoverished homes. Would this research suggest that those programs are a waste of money, or should refocus to make sure the kids can keep the books at home rather than borrow them? Does it suggest that books intended for the adults (like their college textbooks and the like) are the key to this effect, or is it ok if the 500 books are all kids’ books like those programs tend to offer?I can throw in my own anecdotal experience but I’ll spare you, and just wonder if the average lexile level of the books is a relevant factor to the effect observed.
susankies - May 23, 2010 at 8:29 am
I think it has to do with placing value on books…which conveys an attitude toward learning. Neither of my kids were avid readers growing up, but now they have multiple graduate degrees between them. And, interestingly, we went through our books, taking the ones they wanted…most were children’s books but each wanted a copy of my thesis and dissertation!
tcli5026 - May 24, 2010 at 2:43 am
Hey physicsprof! Isn’t one way to discern correlation from causation to actually do a study? How do you know the relationship isn’t more than mere correlation? Or, are you suggesting that we should we just make that assumption (that it’s merely correlation), instead of actually subjecting our assumptions to rigorous testing? Just sayin’.
jmcduff50 - May 24, 2010 at 5:48 am
MrMars — how funny; but, you do have a valid point. Use the public library–kids should be encouraged to do so.
ais23 - May 24, 2010 at 8:50 am
Yes! Visit your public library. They also offer eBooks on audio or PDF if that’s your bag.
reinking - May 24, 2010 at 10:06 am
I wonder if children whose parents have many pills in their homes are healthier than those who have few pills (only pills because the tactile sense of swallowing is clearly more authentically medicating). If so, it would make as much sense to put more pills in homes to increase children’s health as it would to put more books in homes to increase academic achievement.
linpol811 - May 24, 2010 at 10:39 am
When my children were babies, I read to them. They loved it. The teenage years were different. It seemed that reading slowly dropped out of their top ten activities to do. I decided that if they did not want to read novels that I would buy magazines and other types readings related to topics of their interest. One was interested in majoring in computer networking and the other graphic design. They had something to read that was of interest to them. It worked.
swish - May 24, 2010 at 11:09 am
I couldn’t get to a public library by myself. My parents would have to take me (which meant I’d have to ask, which I never would have thought of doing). The few times they did take me there, librarians kept steering me into the children’s section and even stopped me when I tried to leave it. When I did manage to sneak into the adult sections, I found the shelves way too tall, even with stools … and they didn’t allow me check out anything from those sections anyway. Even bookstores were nicer and better than that horrible library (Allentown, 1962-1968). I had no desire to go back. I liked reading my parents’ books at home much better.(Mbelvadi, I am now also a librarian — academic, not public. Why did I become one? I liked the concept of libraries, if not the reality I’d experienced.)
diehl - May 24, 2010 at 11:33 am
Neither of my parents attended high school but read a lot. We made our regular monthly visit to the bookmobile. All nine of my siblings are avid readers.I read a lot. My kids read a lot (and yes, on kindle).
backfull - May 24, 2010 at 12:03 pm
One way to get at the correlation/causation dilemma might be data on the type of books. For no particularly good reason, we saved literary classics and now out-of-date science texts. Others may have large collections of popular non-fiction, NatGeo, etc. If differences between such putative cohorts could be teased out, it might be revealing.
kmarch - May 24, 2010 at 12:09 pm
Let us not forget the influence of early teachers. Kindergarden and 1st grade teachers do alot to influence kids’ reading. They are individuals with power in a child’s life. Some of them are terrific motivators. I also suspect that a love of reading plays substantially into the mix.
eelalien - May 24, 2010 at 12:18 pm
There you go again – every time there is even a speck of potential controversy (dust mite in this case), the grumpy curmudgeonly naysayers feel that they simply must spew their bile – on a study which they haven’t even seen! Really – how many of you are actually academics? Frankly, few I know would give themselves a tag that announces their supposed professional standing…It’s a twenty-year study – in twenty-seven countries. Aren’t you just a bit (scientifically) curious to read the results and findings before blasting it – or does that take away the pleasure of stepping right into it uniformed but heavily opinionated?
whartonc - May 24, 2010 at 1:32 pm
This study by researchers at the University of Nevada, Reno; UCLA; and Australian National University was led by Mariah Evans, University of Nevada, Reno associate professor of sociology and resource economics. The complete paper does contain many details that the Chronicle is unable to include. If you would like more information, Contact Evans at Nevada.
nordicexpat - May 24, 2010 at 2:49 pm
I posted this over at Brainstorm, but I’ll do it here as well. For those who don’t have free access, it looks like a pre-print version of the article is located here.I still haven’t had a chance to read the article, but it looks to me as if the study suggests that parents’ commitment to “scholarly culture” strongly correlates with the amount of time their children spend in school and whether they graduate from college, and the amount of books in a household strongly correlates with the parents’commitment to “scholarly culture.” I imagine that if someone were to be able to draw a correlation between Kindle and a commitment to scholarly culture, then, according to this study, they would be able to show a correlation with academic success at school. But I think they have struck on a novel way of classifying parents, rather than showing what causes academic success per se (after all, I’m not sure if we have established why students drop out in the first place: is it because their reading skills are proficient enough, or is it because their commitment to academic success at school isn’t high enough, or it because of some other reason.
davidscottlewis - May 25, 2010 at 6:35 am
I’d be much more interested in seeing if there’s a correlation — and, even better, a causal relationship — between so-called “smart kids” and the types of books that they read and their parents read. Let’s face it, not all books are created equal.I find that only about 40% of the books that I’d like to read are available on the Kindle, but I’ll also admit that I’m more inclined to read a book published by a university press. Frankly, I care more about reviews than the imprint, but the imprint does sway me a bit. For me, reviews are the most useful tools for pruning, especially for casual/leisure reading; I don’t want to waste time reading (or money buying) a highly flawed work, opting for a Qeustia edition instead, even if the work is embargoed for several years. But for a good read, I’ll buy without any hesitation. As noted, 60% of the books that I’d like to read are not Kindle-friendly, so the Kindle may not be a good yardstick for me. Perhaps it’s even a contrarian indicator of a sort.If a family library is stocked primarily with highly-rated books published by the likes of Oxford, Cambridge, Princeton, Harvard, Yale, MIT, would this be equivalent in “value” to a family library stocked primarily with books on a New York Times Best-Seller list? My gut tells me that they’re not equivalent and wouldn’t have the same affect and impact on the children growing up in said environments.Too many good books to read; too little time. IMHO, quality does matter. And it will matter to one’s children, too.
citizenship - May 25, 2010 at 1:07 pm
I’m not an expert on correlation/causation, but I do know what inspiration can mean to a child. My parents grew up during the Great Depression, Mom on a very rural farm without electricity and Dad in the city. Dad struggled in school after the loss of his mother at age twelve and his father had to frequently travel very long distances out of town in order to house and feed not only his son but his parents and other relatives. His grandmother read to him about Charles Lindbergh and scraped together enough money to buy him a birthday flight on a biplane. It opened a whole new world to him and later inspired him to try for Army Air Corp flight school after volunteering the day after Pearl Harbor. Without a college degree but with frequent letters of support from his grandmother, he mastered the intricacies of mathematics, aerodynamics, navigation, cartography and a host of other sciences to fly. As a pilot he went on to fly in the first elements of airborne paratroopers that began the liberation of Europe and evacuated wounded from front-line air fields to hospital in England. After the war he used some of those skills to design and build a host of things. Mom’ mother, aunts and teachers encouraged her learning and efforts to make more of herself. She and Dad became true partners throughout their lives in building a family and businesses together. They made many small and large personal sacrifices throughout their early years together to see that their kids could have books, magazines and maps to explore their world. The stories they shared of the hardships and adventures of their lives, the Childcraft series, National Geographics and Life magazines to name but a few, fed an insatiable hunger in us that we hopefully have handed on to our children as well.
occidentalir - May 25, 2010 at 4:37 pm
A couple of people have mentioned Childcraft. My parents had a reasonably large number of books, both adult and childrens’, around the house but Childcraft was one of my favorites to read. A wide range of topics with increasing reading levels with each subsequent volume. I learned about stuff ranging from Homer being blind (and also legendary) to Dwight Eisenhower breaking his leg trying to tackle Jim Thorpe when the Carlisle Indians beat the West Point football team. Plus what makes chewing gum chewy and how the Europeans had never seen popcorn (or corn for that matter) until they came to the New World. Great stuff, horizon-broadening, exactly what one wants from a book.I don’t know if the current editions are up to the level of the old ones — my sister bought Childcraft for her kids, but she went out and bought the old 1960s era edition.
davidscottlewis - May 25, 2010 at 10:54 pm
@richardtaborgreene (comment # 15):I trust that your comment was merely sarcastic. Of course, talking with one’s children, reading and instructing them, …, is a necessary condition, but I’d argue that it’s not a sufficient condition and that books help by creating a better learning environment.@bdbailey (comment # 17):I strongly disagree: What one reads does matter, a lot. However, reading anything at all (sans Twits and Facebook updates) is probably better than reading nothing. But lexile level does matter, as does quality.@mrmars (comment # 18):Of course, having access to a well-stocked library helps. Owning books creates a different home environment, an environment designed for learning, however. Owing a book is simply not the same thing as borrowoing a book from a library, yet in some (many?) cases it may be the best (only?) option: Unfortunately, good books are often quite expensive.@citizenship (comment # 36):I applaud your parents. I’m pretty sure that if the world had more parents like your parents, it would be a much better place.
dreburton - January 6, 2011 at 11:06 pm
Not all books need to be expensive or best sellers. You want to provide interest, varied genre, and choice to children of all ages.
The key is to motivate.
Erika Burton, Ph.D.
Stepping Stones Together, Founder
http://www.steppingstonestogether.com