I have been using the cognitivefun site and, more recently http://www.brainboffin.com/, which permits me to do more than 9-back. There is a multimodal version at http://cognitivefun.net/test/24 that I also occasionally use.
I would use the downloadable Brain Workshop but am running an inflexible OS on decrepit hardware and do not have the wit to get it to work.
Hi, well this is just from personal experience so ymmv, but I've been playing the game off and on for the past two years and am convinced of positive effects.
I do know that, beforehand, I had never been able to study for protracted periods of time and enjoy the experience - for me, studying had always been a fight against intellectual and physical restlessness (=restless legs, itching, shifting about on my seat). DnB seems not only to permit me to sit down and focus for long periods, it actually makes me want to study - I feel compelled to learn and get a...
After having suffered procrastination and possible ADD symptoms for a long while (I left revising for my Finals exams to the evening before each paper, two months after most others), I have recently begun to find some strategies that work for me. In fact, they work so well that I decided to quit my job for a year to capitalise on my new-found capacity for hard study and upgrade myself.
Think it, do it: as soon as I become aware of something that needs to be done and can be done (without major disruption), then I do it right away. This frees up working mem
The things that I enjoy in a game are repetition, speed and simple strategy. I guess that dnb has the first two. When I started playing it I think I found it 'intriguing,' as it felt so odd to play. What I enjoy about it now is the way in which it highlights my distracting thoughts and pushes me to disregard them - this can be relaxing after a tough day at work.