Countering antivaccination attitudes: don’t twiddle the dials before examining the engine

Recently, a number of media outlets enthusiastically reported that “Scare tactics may be the surest way to get parents to vaccinate their children“, suggesting to “Scare the crap out of [anti-vaccine parents]“, and happily claiming that “There’s a surprisingly simple way to convince vaccine skeptics to reconsider“.

Unfortunately, the study that these bold statements are based on, “Countering antivaccination attitudes” by Horne, Powell, Hummel and Holyoak and published in PNAS, suffers from a number of serious flaws. Continue reading “Countering antivaccination attitudes: don’t twiddle the dials before examining the engine”