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Have you ever asked yourself if subliminal audiocassette tapes really work These audiocassette tapes produce everything from quick weight loss to peace of mind Well Professor Philip M Merikle of the University of Waterloo Ontario did a study on this exact topic Professor Merikle noticed an increase of sales in commercially made audiocassettes which hauls in now about 50 million annually With this observation Professor Merikle stated that these tapes were produced with a subliminal message Along with this statement he continued saying that commercially produced subliminal tapes can be detected in some way First he is going to check each cassette to see if it contains a placebo by using the spectrographic voice-analysis technique Second he is going to expose the tapes to human participants and ask if they heard a noise plus a message or if they just heard a noise alone After this experiment Professor Merikle concluded that no information is perceived from these cassettes Professor Merikles studies have been the most quoted on the topic of subliminal messages on audiocassettes after doing this experiment In response to this experiment Professor Eich Hyman and Urban claim that you cannot make such claims that the subliminal audiocassettes are not effective for several reasons The first reason is that Professor Merikle was generalizing from three studies of a few tapes which in effect is grave danger from all of the other available subliminal audiocassettes available Second the research as it applies to contrasted masked messages which is costly technologically complex and is still in its early stages Plus there was no evidence that these same tapes could be changed in the future to be more effective Professor Eich Hyman and Urban also found difficulties in Professor Merikles study First Professor Merikle used commercially available audiocassettes which he wasnt even sure that there were subliminal messages on those cassettes Second There was no ratio for signal to noise that was reported Signal to noise ratios
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