Until now, sorting the truth from deception has relied on subjective hunches about individuals’ honesty, or else the (26) measurements of old- fashioned polygraph machines. But what if there were a sleek scientific tool that could peer into the human brain and prove (27) when a person was lying As advances in neuroscience have mapped out the brain in (28) detail in recent years, businesses have been clamouring to commercialize the emerging research. The newest trend is for companies to offer (29) resonance imaging (MRI) scans that they claim (30) brain activity associated with deception. Already this year, new companies such as No Lie MR/and Cephos have been pitching defense lawyers, counter-intelligence agencies and (31) spouses with their promises to reveal the cold truth. Plenty of skeptics see the claims as overhyped, and there are serious worries about ethics and civil (32) . But with billions of pounds to be made if lie detection can be (33) merchandised, the sector is about to take off. The industry’s premise is that (34) while a subject stretches inside an MRI scanner. So if, as you are being scanned, a computer screen asks questions to which you know the true answer, (35) . The claims are backed up by academic research which set out to find the truth about lying. There is already interest in Britain from defendants who see hope in the new technology. (36) , and bioethicists worry that--accurate or not--these tests will be misused.
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Yet there remain serious questions about the scientific vali......