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Handlers' beliefs affect explosive- and drug-sniffing dog performance

Drug- and explosives-sniffing dog/handler teams' performance is affected by human handlers' beliefs, possibly in response to subtle, unintentional handler cues; a new study found that detection-dog/handler teams erroneously "alerted," or identified a scent, when there was no scent present more than 200 times -- particularly when the handler believed that there was scent present


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You aren't suggesting that cops lie, are you?

Governmental officials are always totally honest and truthful.