We are the archi­tects and builders of our own brains.

For mil­len­nia, how­ever, we were obliv­i­ous to our enor­mous cre­ative capa­bil­i­ties. We had no idea that our brains were chang­ing in response to our actions and atti­tudes, every day of our lives. So we uncon­sciously and ran­domly shaped our brains and our lat­ter years because we believed we had an immutable brain that was at the mercy of our genes.

Noth­ing could be fur­ther from the truth. Read the rest of this entry »

In a now well-known 1993 paper in Nature called “Music and spa­tial task per­for­mance”, Frances H. Rauscher and her col­leagues report that par­tic­i­pants who were exposed to the first move­ment “alle­gro con spir­ito” of the Mozart Sonata KV 448 for Two Pianos in D major scored sig­nif­i­cantly higher on stan­dard­ized tests of abstract/spatial rea­son­ing abil­ity than those who were instructed to relax or those who just sat there in silence.

Even though the par­tic­i­pants in Rauscher et al.‘s study were col­lege stu­dents, and they didn’t admin­is­ter a full bat­tery of cog­ni­tive tests to prop­erly assess gen­eral intel­li­gence, their find­ings trans­lated into “play Mozart to your chil­dren and they will grow up smart.” A cot­tage indus­try was born. Read the rest of this entry »

The grow­ing field of cog­ni­tive train­ing (one of the tools for brain fit­ness) can appear very con­fus­ing as the media keeps report­ing con­tra­dic­tory claims. These claims are often based on press releases, with­out a deeper eval­u­a­tion of the sci­en­tific evidence.

Let’s take a cou­ple of recent exam­ples, in suc­ces­sive days:

“It doesn’t work!” type of head­line:
Reuters (Feb. 10, 2009)  For­mal brain exer­cise won’t help healthy seniors: research“
Healthy older peo­ple shouldn’t bother spend­ing money on com­puter games and web­sites promis­ing to ward off men­tal decline, the author of a review of sci­en­tific evi­dence for the ben­e­fits of these “brain exer­cise” pro­grams says.

It works! type of head­line:
Sci­enceDaily (Feb. 11, 2009)  “Com­puter Exer­cises Improve Mem­ory And Atten­tion, Study Sug­gests“
Accord­ing to the researchers, par­tic­i­pants who used the Brain Fit­ness Pro­gram also scored as well as those ten years younger, on aver­age, on mem­ory and atten­tion tests for which they did not train.

So, does struc­tured brain exer­cise / cog­ni­tive train­ing work or not?

The prob­lem may in fact reside in ask­ing this very ques­tion in the first place, as Alvaro pointed out a while ago in his arti­cle Alzheimer’s Dis­ease: too seri­ous to play with head­lines.

We need a more nuanced set of questions.

Why? Because:
1. Cog­ni­tion is made of sev­eral dif­fer­ent abil­i­ties (work­ing mem­ory, atten­tion, exec­u­tive func­tions such as decision-making, etc)
2. Avail­able train­ing pro­grams do not all train the same abil­i­ties
3. Users of train­ing pro­grams do not all have the same needs or goals
4. We need to dif­fer­en­ti­ate between enhanc­ing cog­ni­tive func­tions and delay­ing the onset of cog­ni­tive deficits such as Alzheimer’s.

Let’s illus­trate these points, by Read the rest of this entry »