In the last couple of years I have stumbled on numerous books, articles and self development programs that proposed that non dominant hand training may have far reaching cognitive benefits.
Some examples:
http://www.dailymail...lf-control.html
-here it is proposed that non dominant hand training improves self control and impulsive behavior
In book "Whole brain power " author Lavery claims that motor-skill development of both right and left hands are directly linked to development in the left and right hemispheres of the brain and proposes that training the non dominant hand leads to many benefits like: increased creativity, better coordination, concentration, clarity of thinking, better mood etc
However, the book is mostly comprised of anecdotes and really slim on studies, the only one I can recall from the book is the well known study where juggling was shown to increase white matter in the brain in a month of practicing or so.
I have tried googling some studies on the matter but found only this:
http://www.ncbi.nlm....pubmed/20809062
Their conclusion: These results indicate that shaping exercises, but not general activity training, increase dexterity of the trained non-dominant hand in parallel with a shift of location of active transcranial magnetic stimulation positions. Shifts of active cortical areas might be important for the interpretation of brain plasticity in common behavioural tasks.
Tbh I am not even sure what that conclusion means in practice lol, but thats all I could find.
So, do you think non dominant hand training might be a useful area to pursue general self improvement or is this mostly wishful thinking?
Thanks