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Your brain is like a muscle: the more you use it, the stronger it gets. For those who believe that claim, there are dozens of brain-boosting games now on the market. What makes them special, is that the #.1. (IMPROVE) ________________ does not only manifest itself within the context of the game but in the real world as well.

On the face of it, this makes a lot of sense. It is well known that older people who stay mentally active are more #.2. (RESIST) __________________ to mental decline according to the popular ‘use it or lose it’ hypothesis. If it works for older people, shouldn’t it work for everybody else?

#.3. (FORTUNATE) __________________for the wannabe genius, there are no simple answers. While there is no #.4. (SHORT) __________________ of studies suggesting that some mental functions can be trained, most companies offering brain-training games do not specify how their product will change your brain.

Although these games may or may not turn intellectual zeros into heroes, many #.5. (PSYCHIATRY) _____________________ use them as a miracle cure for their patients. This, perhaps, is where brain training will have its greatest impact – not as a brain gym, but as an effective #.6. (TREAT) ___________________ for people with serious mental health problems or brain injury.

adapted from www.newscientist.com