Less Wrong is a community blog devoted to refining the art of human rationality. Please visit our About page for more information.

[Link] Reality has a surprising amount of detail

14 jsalvatier 13 May 2017 08:02PM

[Link] Submission and dominance among friends

8 jsalvatier 28 March 2017 02:43AM

[Link] If only we had taller been

4 jsalvatier 04 March 2017 11:15PM

[Link] The "I Already Get It" Slide

12 jsalvatier 01 February 2017 03:11AM

LessWrong Help Desk - free paper downloads and more (2014)

30 jsalvatier 16 January 2014 05:51AM

Over the last year, VincentYu, gwern and others have provided many papers for the LessWrong community (87% success rate in 2012) through previous help desk threads. We originally intended to provide editing, research and general troubleshooting help, but article downloads are by far the most requested service.

If you're doing a LessWrong relevant project we want to help you. If you need help accessing a journal article or academic book chapter, we can get it for you. If you need some research or writing help, we can help there too.

Turnaround times for articles published in the last 20 years or so is usually less than a day. Older articles often take a couple days.

Please make new article requests in the comment section of this thread.

If you would like to help out with finding papers, please monitor this thread for requests. If you want to monitor via RSS like I do, many RSS readers will give you the comment feed if you give it the URL for this thread (or use this link directly). 

If you have some special skills you want to volunteer, mention them in the comment section.

[Link] New prize on causality in statistics education

4 jsalvatier 15 December 2012 11:50PM

"[Judea] Pearl is setting up a contest to help advance the teaching of causal inference in introductory statistics courses" (link).

What are you working on? December 2012

7 jsalvatier 02 December 2012 06:49PM

This is the sixth bimonthly 'What are you working On?' thread. Previous threads are here. So here's the question:

What are you working on? 

Here are some guidelines:

  • Focus on projects that you have recently made progress on, not projects that you're thinking about doing but haven't started.
  • Why this project and not others? Mention reasons why you're doing the project and/or why others should contribute to your project (if applicable).
  • Talk about your goals for the project.
  • Any kind of project is fair game: personal improvement, research project, art project, whatever.
  • Link to your work if it's linkable.

Meetup : Seattle Meetup: Bayes Theorem Tutorial

2 jsalvatier 29 November 2012 07:31AM

Discussion article for the meetup : Seattle Meetup: Bayes Theorem Tutorial

WHEN: 02 December 2012 04:00:00PM (-0800)

WHERE: 1900 NE 68th St. Seattle, WA 98115

This Sunday Brendan will be giving a tutorial on Bayes theorem at the Ravenna House. I understand there will be a couple different explanations and some practice problems.

Normal socializing and dinner to follow.

As a follow up to Brendan's tutorial, next week I will be give a non-technical introduction to thinking with statistical models. In particular, the usefulness of Hierarchical Models and other Hidden Variable models.

Discussion article for the meetup : Seattle Meetup: Bayes Theorem Tutorial

How well defined is ADHD?

8 jsalvatier 15 November 2012 11:34PM

I've long had attention and focus problems, but never explored the possibility that I have ADHD till recently. I understand that it's a standard term, but I'm still a bit suspicious; Psychiatry doesn't seem like the most reliable field.

Are there good reasons for picking out the behaviors associated with ADHD and giving them a name? Obviously this is a different question than whether ADHD is a 'disorder' or 'disease', and whether ADHD medication is good or bad for people.    

Answers that would satisfy me


  • Behaviors associated with ADHD strongly cluster
  • Analyzing questionnaires of attention and focus behaviors with faction analysis naturally produces an 'ADHD dimension' that explains a lot of variance (similar methodology to identifying Big 5 personality traits). 
  • ADHD diagnosis a strong predictor of anything interesting (income or grades or some contrived but interesting lab test)?
  • Something else along these lines.


Meetup : (Seattle) Conscientiousness

0 jsalvatier 09 November 2012 10:10PM

Discussion article for the meetup : (Seattle) Conscientiousness

WHEN: 11 November 2012 04:00:00PM (-0800)

WHERE: 1900 NE 68th St. Seattle, WA 98115

Three short conscientiousness related presentations.

  • Andrew will give a short presentation on what psychologists know about conscientiousness (one of the big-5 personality traits),
  • Ben will talk a bit about the book "Getting Things Done".
  • I will briefly talk about Vitamin D supplementation research.

We'll have some discussion and socializing and order dinner. I'm interested in talking about how to work on conscientiousness related skills (organization of various sorts, motivation etc.).

See you there!

If you need help: 360 602 1069

Discussion article for the meetup : (Seattle) Conscientiousness

View more: Next