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 be independent and self-sufficient", Slater said. He also mentioned the limitations of the study. These include the fact that findings regarding the ONDCP campaign were based on survey results and not a randomized, experimental design in which some youth saw the ONDCP campaign and others did not. Another limitation was that the study, while taking place in twenty communities around the U.S., did not use a random sample of U.S. youth. Above the Influence Above the Influence originated as a government-based campaign of the National Youth Anti-Drug Media Campaign conducted by the Office of National Drug Control Policy in the