SOCIETY should embrace the use of drugs that boost brain power. That’s the message from a group of neuroscientists, psychiatrists and ethicists.

A recent survey found that at some US universities, up to 25 per cent of students routinely buy Ritalin or Adderall – prescription drugs to treat attention-deficit hyperactivity disorder – on black markets to boost memory and concentration. The stimulant Modafinil has also been touted as a mind enhancer.

However, studies of the effect of some of these drugs on cognitive function in healthy people have shown mixed results. Henry Greely of Stanford Law School in California, and his colleagues, …