Dr. Michael Merzenich has writ­ten a great post titled “cog­ni­tive reserve is a good thing to work on!. Rec­om­mend­ed read­ing if you are inter­est­ed in anoth­er sci­en­tif­ic per­spec­tive for cog­ni­tive training. I agree we should know more (as usu­al), espe­cial­ly for pol­i­cy deci­sions, but there is enough research, from Mar­i­an Dia­mond et al (see beau­ti­ful…