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"As the new school year ramps up, teachers and parents need to be reminded of a well-kept secret: Across all grade levels and academic subjects, girls earn higher grades than boys. Not just in the United States, but across the globe, in countries as far afield as Norway and Hong Kong. This finding is reflected in a recent study by psychology professors Daniel and Susan Voyer at the University of New Brunswick. The Voyers based their results on a meta-analysis of 369 studies involving the academic grades of over one million boys and girls from 30 different nations. The findings are unquestionably robust: Girls earn higher grades in every subject, including the science-related fields where boys are thought to surpass them."

"How many times have you heard that "practice makes perfect?" Well, a new meta-analysis of dozens of previous studies shows that it is not always true. In this post, Alfie Kohn explains and talks about the consequences of this when it comes to education. Kohn is the author of 13 books about education and human behavior, including "The Schools Our Children Deserve," "The Homework Myth," and "The Myth of the Spoiled Child: Challenging the Conventional Wisdom About Children and Parenting." He lives (actually) in the Boston area and (virtually) at www.alfiekohn.org."

"A large review recently published in The Journal of the National Cancer Institute confirms what we've been hearing for years: Sitting can be fatal. + It's been linked to cancer, diabetes, and cardiovascular disease. In this latest meta-analysis, Daniela Schmid and Michael F. Leitzmann of the University of Regensburg in Germany analyzed 43 observational studies, amounting to more than 4 million people's answers to questions about their sitting behavior and cancer incidences. The researchers examined close to 70,000 cancer cases and found that sitting is associated with a 24% increased risk of colon cancer, a 32% increased risk of endometrial cancer, and a 21% increased risk of lung cancer. + The really bad news: You can't exercise away the habit's harmful effects. "Adjustment for physical activity did not affect the positive association between sedentary behavior and cancer," the authors write. Even participants who achieved the daily recommended levels of physical activity were at the same risk as those who spent their day sitting. "[The results] indicate that the increased risk of cancer seen in individuals with prolonged time spent sedentary is not explained by the mere absence of physical activity in those persons," the researchers say. + S"