Computer programs to improve brain performance remain a booming business. Witness, for example, the sales of Dr Kawashima's Brain Training for the Nintendo DS Lite.

Some people buy these 'Brain Training' products because they've seen Johnny Ball use them on TV. Many feel they are buying into something that has been based on scientific research. However, the New York Times points out that although they may be inspired by science, their effectiveness has never been 'proven' by science.

In an article in 2007, the New York times indicated that the expensive products were no better at developing mental agility than any other puzzles or quizzes - like Sudoku, or crosswords. The article suggested that "instead of spending money on computer games" it would be better to "invest in a gym membership. Or just turn off the computer and go for a brisk walk."

In point of fact, of course, the problem with these 'Brain Training' programs and gadgets is that they train your brain... to use that particular program or gadget. Yes, over time you will get better at typing in answers to mathematical problems; yes, you will get better at tapping shapes in a particular order or sliding blocks across a miniature screen. However, better at doing that does not automatically equate to real improvement in brain 'power'.

Alternatively, puzzles such as Sudoku do stimulate the brain in a myriad of different ways; this, in turn, can boost the development of 'transferable skills'. And the best Sudoku puzzles don't take batteries or give you repetitive strain injury.

The New York Times [Nov 8, 2007]
Sudoku PocketMems [free downloadable puzzles]