The Relative Age Effect in Sports: It’s Complicated
Malcolm Gladwell capitalized on research conducted by Roger Barnsley (et al., 1985) by suggesting in his 2008 book, Outliers, that there is an “Iron Law of Canadian Hockey.” This theory is also known as the relative age effect in psychological research and it suggests that the older a player is when they begin training for a sport, the more likely they are to achieve success in that sport.
In fact, in a talk posted on YouTube, Gladwell goes even further, saying, “In absolutely every system in which hockey is played, a hugely disproportionate number of hockey players are born in the first half of the year.” He says this in the context of a talk about society not taking advantage of opportunities to improve human potential.
“Logic tells us there should be as many great hockey players born in the second half of the year,” suggests Gladwell, “as born in the first half. But what we can see here, there’s almost no one born it the end of the year, everyone’s from the beginning.”
But is this actually true — are more elite hockey players born in the first half versus the second half of the year?


You may have missed the Oscars on Sunday night, but you surely haven’t missed all the talk about them since their aired.
Everyday, when we open our electronic mailbox, we get our fair share of unsolicited email. Of course, the unsolicited offers have gotten a lot more subtle and duplicitous. A few years ago, dozens of marketeers tried to get us to post
Let me preface this by stating that I was born in 1985 and that makes me 27 years old. Arguably because of this, my life has been defined by the rapidly changing technology of the 20th century.
USA Today on Thursday published an editorial hopeful entitled, Editorial: Fix broken mental health system. Which would be fine as a stand-alone piece advocating more money, focus and resources for our nation’s patchwork system of mental health and recovery care.
Anyone can understand why school authorities would be jumpy, after the recent mass shooting at Newtown, CT.
On Friday, the National Rifle Association, a special interest group of 4 million members, released a
After the tragic shooting in Newtown Connecticut last Friday, many have good reason to feel anguish, despair and misery.
In rearing my kids I always told them that ‘hate’ is a strong word. Don’t use it lightly, I advised. Don’t say, “I hate this tuna casserole!” Instead say, “Gee Mom, I strongly dislike this tuna casserole. Could I have a hot dog?” Save ‘hate’ for when ‘hate’ is the only word that can describe how you feel, when it counts.
I have a poster in my office from the 1950s. It’s yellowed with the passing of years, but it still makes me smile. A man is changing a tire in the snow and the situation isn’t going as planned. He has a grimace on his face and tire chains are wrapped around his wrists like shackles. A woman is standing over him with a pack of cigarettes. The text reads:
Sadly, the lynch mobs were out in full force on Friday on Twitter and other online media, threatening the radio show hosts after a prank phone call they made to a nurse who took the call later committed suicide.
With anything that changes, especially an important reference manual, people are going to be confused about what those changes actually mean. Nowhere is this more evident than in the 5th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5).