anonym comments on Open Thread: August 2009 - Less Wrong

5 Post author: taw 01 August 2009 03:06PM

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Comment author: anonym 01 August 2009 11:08:08PM *  0 points [-]

It looks to me like garden-variety armchair speculation and argument from personal anecdote.

Comment author: edragonu 02 August 2009 03:51:18PM *  0 points [-]

can you define garden-variety armchair speculation?

Comment author: anonym 02 August 2009 05:37:44PM 0 points [-]

"Garden-variety" just means "typical", and by "armchair speculation" I meant opinions not backed up rigorously and not grounded in the relevant sciences (e.g., cognitive neuroscience, neuropsychology).

I should have left out the "armchair", since that gives the wrong impression of speculating about things in which one has no experience whatsoever, which is not the case here.

Comment author: gwern 01 August 2009 11:43:53PM 0 points [-]

I agree. And it's too bad - there's a lot psychology has to say about mental focus and attention, about how high working memory leads to greater focus, etc.

Comment author: edragonu 02 August 2009 03:52:02PM 0 points [-]

what's focus for you? Really curious about how you define it :-)

Comment author: gwern 02 August 2009 03:55:21PM 0 points [-]

I define it practically: any mental state in which I'm able to score higher than usual playing Dual N-Back. Any more complex definition falling back on 'being able to suppress unwanted stimulus' or 'remembering in short-term or working memory that which is needed', seems too vague and begging the question for my taste.

Comment author: edragonu 02 August 2009 04:05:24PM 0 points [-]

That seems to me a definition of effectiveness, not focus.

Comment author: gwern 02 August 2009 07:05:35PM 0 points [-]

Mayhap effectiveness is focus. Two words may denote the same concept, after all. As I said, any other definition seems to be essentially 'having in one's mind only that which is wanted', which is not a definition at all. My scores on DNB are positively correlated with my subjective impressions of focus; it's good enough for me.

Comment author: Fetterkey 02 August 2009 05:07:02AM 0 points [-]

Do you have a link to some well-written material on the subject? You've piqued my curiosity.

Comment author: gwern 02 August 2009 09:10:57AM *  2 points [-]

There's nothing really written for the layman online (which I know of). You can start by googling for topics like 'latent inhibition' and research on meditation.

Genuine research papers-wise, you could join http://groups.google.com/group/brain-training to which group's files I have uploaded ~20 papers on various topics related to working memory and focus.

Important ones:

  • klingberg2004-workingmemory-increase-helps-adhd.pdf
  • mcvay2009-workingmemory-improves-focus.pdf
  • thorell2008-workingmemory-improves-attention.pdf
  • unsworthengle2008-wm-executive-focus.pdf
  • jaeggi2008-nback-increases-iq.pdf

EDIT: in the future, Google will be deleting Groups' Files. You will want to search around for where the collection has moved to; I keep local copies of the most important ones in my wiki, and I copied all files c. October 2010 to my Dropbox account.

Comment author: gwern 10 October 2010 02:10:24AM *  0 points [-]

In lieu of anything better, you can try my DNB FAQ which discusses the general subject: http://www.gwern.net/N-back%20FAQ