If anyone is looking for an open source python version that doesn't require silverlight:<p><a href="http://brainworkshop.sourceforge.net/" rel="nofollow">http://brainworkshop.sourceforge.net/</a>
Dual N-back is also available for free online at <a href="http://cognitivefun.net" rel="nofollow">http://cognitivefun.net</a> (under Tests -> Memory) along with other well-known psychological tasks, including visual/auditory reaction time test, Eriksen flanker test, Stroop test, various flavors of the digit span test, paced serial addition test, and more.
Hi! I'm the author of soak your head. We worked with the researchers to follow the scientific paper as closely as possible. Feel free to use the app (the source is open and available on the site). In addition, we already have the application in the Windows Phone 7 marketplace, and it's on its way to the iOS app store.
Wow, I did this, and went through the following stages:<p>1. What am I supposed to do?<p>2. Oh okay. Wow, this is really hard.<p>3. Focus focus focus tunnel vision mode<p>4. Now I am really good at this.<p>5. My brain is tired and I am no longer good at this at all.
Here is a pretty nice (and informative) article based on the research behind the Dual N-back game.<p><a href="http://www.scientificamerican.com/blog/post.cfm?id=you-can-increase-your-intelligence-2011-03-07" rel="nofollow">http://www.scientificamerican.com/blog/post.cfm?id=you-can-i...</a>
"In the study performed by Susanne M. Jaeggi et. al., study subjects practiced the dual n-back test for about 20 minutes a day for up to 19 days. At the end of that time, the subjects were shown to have increased intelligences (as measured by gF)."<p>An improvement in intelligence that becomes apparent after only 19 days <i>smells</i> too good to be true. Correct me if I'm wrong, but surely someone that practices IQ test problems will appear to be more intelligent the next time they are evaluated. It seems like something like that might be what they're seeing here, but I don't know enough about this training to say that.
IQ boost for the iPhone is free and soon to be open sourced.
<a href="http://itunes.apple.com/us/app/iq-boost/id286574399?mt=8" rel="nofollow">http://itunes.apple.com/us/app/iq-boost/id286574399?mt=8</a>
Another one here, which I like because it remembers your 'N' and lets you advance only when you're ready.<p><a href="http://www.brainboffin.com/" rel="nofollow">http://www.brainboffin.com/</a>