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Rise in Teen Marijuana Use Stalls, Use of Synthetic Marijuana and ‘Bath Salts’ is Very Low

By Guest PostDecember 22, 2012Culture, Generaladderall, amphetamines, barbiturates, bath salts, cannabinoids, cannabis, cocaine, colorado, crack, daily use, dea, designer drugs, ecstasy, hallucinations, hallucinogens, heart rate, herbs, heroin, illicit drug, index, indicator of use, k 2, lloyd johnston, lsd, marijuana use, narcotics, oxycontin, paranoia, psychotherapeutic drugs, rise, salvia, salvia divinorum, sedatives, side effect, spice, statistical significance, suicidal thoughts, synthetic cathinones, synthetic marijuana, teen marijuana, tobacco, tranquilizers, vicodin, violent behavior, Washington

ANN ARBOR — National samples of 45,000 to 50,000 students in three grades (8, 10, and 12) have been surveyed every year since 1991 as part of the nationwide Monitoring the Future study. Among the most important findings from this year’s survey of U.S. secondary school students are the following:

Marijuana. After four straight years of increasing use among teens, annual marijuana use showed no further increase in any of the three grades surveyed in 2012. The 2012 annual prevalence rates (i.e., percent using in the prior 12 months) were 11%, 28%, and 36% for 8th, 10th, and 12th graders, respectively. (Among the 8th graders there was a modest decline across the past two years—from 13.7% in 2010 to 11.4% in 2012—that reached statistical significance.) (more…)

Greg Landsberg: Seeking the Higgs boson

By Guest PostJune 29, 2012Scienceamerican group, brown, CERN, cms, compact muon solenoid, data, david cutts, david orenstein, electromagnetic interaction, electroweak force, electroweak symmetry breaking, fermilab, gerald guralnik, greg landsberg, higgs, higgs boson, higgs field, higgs mechanism, higgs signal, high precision, lack of sleep, Large Hadron Collider, meenakshi narain, megapixel camera, particle, phenomenon, photon, professor of physics, skype, standard model, statistical significance, switzerland, ultich heintz, universe, z bosons

Greg Landsberg, professor of physics at Brown, is the physics coordinator for the Compact Muon Solenoid (CMS) at CERN in Switzerland, part of a Brown team that includes professors David Cutts, Ultich Heintz, and Meenakshi Narain. The giant instrument’s primary mission is finding the Higgs boson, a particle whose existence would confirm the best guess physicists have made about why things have mass.

On July 4, Landsberg and his colleagues will reveal the latest results of their search. Anything could happen when Greg Landsberg and, including an announcement that the Higgs has been found or that it has been ruled out, sending theorists back to the whiteboard. Landsberg spoke by Skype with science news officer David Orenstein on June 26 as CERN physicists were preparing for their press conference. (more…)

Tag Archives: statistical significance

Rise in Teen Marijuana Use Stalls, Use of Synthetic Marijuana and ‘Bath Salts’ is Very Low

Greg Landsberg: Seeking the Higgs boson