Hypersonic effect Hypersonic effect The hypersonic effect is a term coined to describe a phenomenon reported in a controversial scientific study by Tsutomu Oohashi et al., which claims that, although humans cannot consciously hear ultrasound (sounds at frequencies above approximately 20 kHz), the presence or absence of those frequencies has a measurable effect on their physiological and psychological reactions. Numerous other studies have contradicted the portion of the results relating to the subjective reaction to high-frequency audio, finding that people who have "good ears" listening to Super Audio CDs and high resolution DVD-Audio recordings on high fidelity systems capable of reproducing sounds
Above the Influence and increases in the perceptions that others use marijuana." In 2011, Ohio State University released the results of an independent scientific study stating that the "Above the Influence" campaign appears to have effectively reduced marijuana use by teenagers. "Evidence for the success of "Above the Influence" is especially heartening because the primary independent evaluation of its predecessor campaign, 'My Anti-Drug', showed no evidence for success", said Michael Slater, principal investigator of the new study and professor of communication at Ohio State University. "The 'Above the Influence' campaign appears to be successful because it taps into the desire by teenagers to