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 funding and oversight of Above the Influence ceased, and it transitioned to become a program of the not-for-profit Partnership for Drug-Free Kids. In 2006, the Government Accountability Office released the results of a five-year study, concluding that the previous "My Anti-Drug" campaign was ineffective, and likely counterproductive, leading those exposed to an increased perception that others use marijuana, stating, "analysis also indicated that among current, non-drug-using youth, exposure to the campaign had unfavorable effects on their anti-drug norms and perceptions of other youths’ use of marijuana — that is, greater exposure to the campaign was associated with weaker anti-drug norms