Life With Alacrity: The Dunbar Number as a Limit to Group Sizes - The Diigo Meta page

• 04 Sep 19
  

  Всеволод Устинов

  Что-то вроде исследования про размеры и работоспособность групп

  управление

• 10 Dec 18
  

  Home and Work Bookmarks

  philo reads

• 21 Nov 17
  

  Konstantinos
• 08 Dec 15
  

  elliotfelix

  org orgdev team size structure groups

• 10 Nov 15
  

  Mike Ames

  social dunbar research group size 5 15 50 150

• 15 Nov 13
  

  patdavies40

  social_rules teamwork psychology

• 

  fernando_cuenca

  social_rules teamwork psychology

• 13 Nov 13
  

  alisonseaman

  Curious about the Dunbar Number principle (that groups need to be around 150 to thrive)? A great, clarifying article: http://t.co/4erdRiSkUm

  #viadiigo

• 05 Dec 12
  

  Frederik Marain

  dunbar

• 15 Nov 12
  

  Brian Regnier
  • Dunbar is an anthropologist at the University College of London, who wrote a paper on Co-Evolution Of Neocortex Size, Group Size And Language In Humans
  • he predicts that 147.8 is the "mean group size" for humans
  • This number of 150 has become "Dunbar's Number" and has been popularized by various very popular business books such as Malcolm Gladwell's The Tipping Poin

  1 more annotation...

• 29 Jun 12
  

  Sola Soyombo
• 06 Feb 12
  

  Colas Nahaboo

  psychology

• 03 Feb 12
  

  Tim Lee

  social research sociology community collaboration

• 03 Jan 12
  

  Bob Abooey

  dunbar sociology anthropology research community collaboration science social byoo

• 21 Dec 11
  

  Dante-Gabryell Monson

  dunbar phyle projects leipzigproject research anthropology collaboration social

• 03 Nov 11
  

  Tom Grissom

  research dunbar

• 27 Sep 11
  

  lcolombo

  dunbar_number community socialnetworking research

• 09 Jun 11
  

  Kym Gross

  JUN2011 internet socialmedia science

• 02 Jun 11
  

  Renée Fountain

  dunbarsnumber groupsize

  • Ultima Online
  • that most groups are around 60 large.
  • It is rare to have more than 40 or so active participants in an Allegiance.
  • 150-200 active users. However, whenever it grew beyond that number, it always seemed that politics and dissatisfaction would bubble up such that people would drop out, leaving us back close to 150 or 160
  • Dunbarrian social limits
  • achievement-oriented game
  • I've already noted the next chasm when you go beyond 80 people, which I think is the point that Dunbar's Number actually marks for a non-survival oriented group
  • Essentially, as we increase group sizes beyond 80, to 150, 200, or even 350-500, we typically do so by breaking larger groups down into smaller ones, and continually reducing community sizes down to the point where they can be understood and managed by people -- and so efficiency reasserts itself.

  6 more annotations...

• 30 May 11
  

  Kris Campbell
• 19 May 11
  

  Fernando Gomez

  Teoría de Dunbar aplicada a comunidades on-line

  communidades sociología

• 15 May 11
  

  Greg Parmer

  2011 2014 dunbar dunbar's number group sizes tribes communities friends contacts aded efficiency social

• 22 Mar 11
  

  Imogen Bertin

  Dunbar Number and social media 3B8

• 27 Feb 11
  

  ibox2000

  research

• 21 Jan 11
  

  Matt McAlister

  sociology anthropology community sociality

• 07 Dec 10
  

  Marie Eve Berlinger

  Nombre de Dunbar dans diverses sphères de la vie.

  COLLABORATION ARTICLE NOMBRE SOCIALNETWORKING SOCIOLOGIE

• 31 Oct 10
  

  Kenneth Sutton

  community culture management network socialnetworking dunbar

• 24 Oct 10
  

  Ann Craven

  week8 convergence

• 16 Oct 10
  

  Jeremy Crump

  anthropology networks systems

• 19 Aug 10
  

  David Hood

  imported Dunbar communities socialnetworking socialnetworks networks sociology anthropology culture research analysis

• 14 Aug 10
  

  Phillip Long

  social dunbar collaboration anthropology culture dunbars_number social_networking socialnetworks

• 28 Mar 10
  

  Cy Col

  Lately I've been noticing the spread of a meme regarding "Dunbar's Number" of 150 that I believe is misunderstanding of his ideas. (post continues with a discussion of Dunbar's Number, the size of groups, some empirical and anecdotal experience with sizes of groups.

  dunbar collaboration

• 23 Mar 10
  

  Hans Dusink

  dunbar community networking communities NET204

• 20 Feb 10
  

  Stefan Kueppers

  dunbar social sociology socialsoftware anthropology network science community collaboration

• 02 Feb 10
  

  Jason Zagami

  Cognition dunbar social sociology anthropology community socialsoftware network

• 26 Jan 10
  

  Rene Smit
• 

  Andy Tedd

  Makes some good points going beyond taking Dunbar's number at face value

  PhD socialnetworking anthropology dunars_number for:@twitter

• 30 Nov 09
  

  Alejandro Tortolini

  El numero de Dunbar como limite al tamaño de los grupos. Algunos lo empiezan a plicar a las redes sociales.

  teoria dunbar number numero grupos redes_sociales socialnetworking antropologia neurologia cortex cerebro christopher_allen research society anthropology groups theory

• 26 Oct 09
  

  Gabriela Grosseck

  Ultima Online provides one of the best examples of what sizes an online community will support because it's well documented and the overall game size is large enough to generate many smaller communities. If you look at Raph Koster's statistics for the siz

  socialnetworking psychology research microblogging sociology

• 22 Oct 09
  

  Christopher Allen

  BLOGPOST: "This all leads me to hypothesize that the optimal size for active group members for creative and technical groups -- as opposed to exclusively survival-oriented groups, such as villages -- hovers somewhere between 25-80, but is best around 45-50. Anything more than this and the group has to spend too much time "grooming" to keep group cohesion, rather then focusing on why the people want to spend the effort on that group in the first place -- say to deliver a software product, learn a technology, promote a meme, or have fun playing a game. Anything less than this and you risk losing critical mass because you don't have requisite variety."
  

  dunbar number groups size limit social anthropology community network science lifewithalacrity christopherallen

• 23 Sep 09
  

  socialnetworking dunbar richardschwier eci831

• 19 Sep 09
  

  dan

  The most visible blog-friendly take on the Dunbar numbers

  netcultures networks mind community

• 05 Aug 09
  

  annest

  relationships

• 21 Jul 09
  

  MrPhil Ludington

  dunbar science social networking

• 25 Jun 09
  

  Steve M
• 27 Mar 09
  

  Steven Farrell

  Nexus: Small Worlds and the Groundbreaking Science of Networks

• 25 Mar 09
  

  Florent Darrault

  social network science research sociology community psychology theory dumbar

• 14 Mar 09
  

  Richard Careaga

  dunbar community network

• 09 Mar 09
  

  Heidi Allen

  dunbar's number dunbar

• 28 Feb 09
  

  my serendipities

  for a group to sustain itself at the size of 150, significantly more effort must be spent on the core socialization which is necessary to keep the group functioning. Some organizations will have sufficient incentive to maintain this high level of required

  culture social collaboration sociology anthropology cultural_anthropology

• 13 Feb 09
  

  Gordon Haff

  Bookmarks business social collaboration

• 12 Feb 09
  

  Larry Hawes

  Lately (March 2004!) I've been noticing the spread of a meme regarding "Dunbar's Number" of 150 that I believe is misunderstanding of his ideas.

  dunbar collaboration research social groups behavior culture

• 

  research social collaboration networks socialnetworking network socialsoftware analysis dunbar sociology anthropology groups group communities socialnetworks networking science socialnetwork

• 06 Feb 09
  

  Luis Oopsh

  Revisiting Dunbar's Number
  
  Lately, Dunbar's number has been taken as a mean size for online networks and groups, as shown in Ross Mayfield's Weblog, where he states:

  basic rebasic gen i-g prayandblogs julio redes comunicasocial softsocial comunidad

• 21 Jan 09
  

  Antonio Perez

  ... there is a cognitive limit to the number of individuals with whom any one person can maintain stable relationships, that this limit is a direct function of relative neocortex size, and that this in turn limits group size ... the limit imposed by neoco

  redsocial sociedad

• 

  Anne McCrossan

  social psychology

• 07 Jan 09
  

  johnharris85

  science sociology psychology society dunbar groups

• 25 Oct 08
  

  Matt Perez

  dunbar maxNumber magicNumber 150 blink tippingPoint upper limit

• 30 Sep 08
  

  coachrobbo

  Dunbar supports this hypothesis through studies by a number of field anthropologists. These studies measure the group size of a variety of different primates; Dunbar then correlate those group sizes to the brain sizes of the primates to produce a mathemat

  social group size dunbar number tippingpoint theory sociology socialnetworking science psychology for:jmay42 for:kellyhel for:cme4eyes for:carly.linthwaite for:bjet0421 for:amritsingh85 for:csscott for:batfink for:skarabatsos

• 22 Sep 08
  

  Carmen Tschofen

  dunbar number

  • This all leads me to hypothesize that the optimal size for active group members for creative and technical groups -- as opposed to exclusively survival-oriented groups, such as villages -- hovers somewhere between 25-80, but is best around 45-50. Anything more than this and the group has to spend too much time "grooming" to keep group cohesion, rather then focusing on why the people want to spend the effort on that group in the first place --
• 14 Sep 08
  

  Silvia Andreoli

  socialnetworks dunbar_number cck08

• 05 Sep 08
  

  John Rodrigues

  Dunbar_Number

• 25 Aug 08
  

  paul jones

  Using guilds in Ultima and other online cooperative groups, LWA tries to get at what size limits upper and lower might apply to online relationships and brings up satisfaction as a factor (with an imaginative chart -- that is not data-driven). Worth a not

  SocialNetworking socialnetworks blogs socialnetwork social blog socialsoftware business networking communities research academic networks theory psychology dunbar collaboration article anthropology sociology society network culture group science jomc449

• 08 Aug 08
  

  Emmanuel L

  groupes

• 15 Jul 08
  

  Barbara Lindsey

  Great post about the possible repercussions of the Dunbar Number to online interactions

  online learning research socialsoftware management Dunbar size beyondwebct aroundtheworld

• 06 Jul 08
  

  Mike Stenhouse

  It is rare to have more than 40 or so active participants in an Allegiance.

  psychology social collaboration culture

• 05 Apr 08
  

  jake smith

  dunbar# anthropology communities cooperation efficiency networks groups

• 03 Apr 08
  

  Patricia McGee

  research social Instructional Design Environment pedagogy

  • unbar is an anthropologist at the University College of London, who wrote a paper on Co-Evolution Of Neocortex Size, Group Size And Language In Humans where he hypothesizes:   ... there is a cognitive limit to the number of individuals with whom any one person can maintain stable relationships, that this limit is a direct function of relative neocortex size, and that this in turn limits group size ... the limit imposed by neocortical processing capacity is simply on the number of individuals with whom a stable inter-personal relationship can be maintained.
• 01 Apr 08
  

  himeropa

  Dunbar theory 150 sociology

• 25 Mar 08
  

  Sacha Chua

  social

• 18 Feb 08
  

  Henrik Fu

  dunbar dunbar number

• 27 Nov 07
  

  Robert Letcher

  behavior communities community internet research web2.0 dunbar group-size

• 14 Nov 07
  

  nmaisonneuve

  dunbar sociology social_network **** toread

• 12 Nov 07
  

  dunbar anthropology socialsoftware community tumblr

• 21 Oct 07
  

  Tyson Spraul

  group sociology

• 18 Oct 07
  

  Hans Henderson

  social science humanity

• 30 Sep 07
  

  Rayne Today

  discussion of Dunbar's hypothesis that 150 is a cognitive limit to effective group size

  collaboration research socialsoftware delicious

• 26 Sep 07
  

  Brian Kenyon

  social dunbar @Read Interesting

• 24 Sep 07
  

  terry_ebdon

  anthropology del.icio.us imported networking tippingpoint

• 04 Sep 07
  

  banzaimonkey

  sociology article

• 24 Aug 07
  

  Alan Levine

  Lately I've been noticing the spread of a meme regarding "Dunbar's Number" of 150 that I believe is misunderstanding of his ideas.

  collaboration commentary identity socialnetworking ideas

• 16 Jun 07
  

  Ton Zijlstra

  Christopher Allan on Dunbar

  dunbarsnumber

• 09 May 07
  

  J M

  Dunbar's Number

  cdt-thesis dunbar sociology network community

• 13 Apr 07
  

  Dave Linabury

  Dunbar group-dynamics socialmedia

• 11 Apr 07
  

  jeffhester

  community anthropology dunbar network

• 19 Mar 07
  

  vanesa barrero

  dunbar comunidad estadisticas

• 12 Mar 07
  

  Mike Wesch

  community groups ksudigg networks png

• 17 Jan 07
  

  darwinianvision

  Social Netorks - Online

  • Dunbar & Online Communities  Ultima Online provides one of the best examples of what sizes an online community will support because it's well documented and the overall game size is large enough to generate many smaller communities. If you look at Raph Koster's statistics for the size of groups in Ultima Online, you will see a definite point of diminishing returns at around 150; however, you will also see that most groups are around 60 large.
• 27 Nov 06
  

  Lynne B

  Essentially, as we increase group sizes, we typically do so by breaking larger groups down into smaller ones, and continually reducing community sizes down to the point where they can be understood and managed by people - and efficiency reasserts itself.

  meta communities anthropology social

• 18 Nov 06
  

  Alex Ko

  imported

• 10 Oct 06
  

  Michel Bauwens

  Trust P2P-Cooperation P2P-Science P2P-Sociology P2P

• 09 Oct 06
  

  cshirky

  allen alacrity dunbar social media

• 20 Sep 06
  

  richtbreak

  A good discussion of Dunbar's number and its sometimes incorrect application.

  mind psychology network

• 07 Jun 06
  

  Erik Stattin
• 30 May 06
  

  tezcat tlatlahqui

  blogs collaboration culture folksonomy media socialsoftware theory

• 19 May 06
  

  Jeremy Price

  academic anthropology behavior collaboration culture neuroscience research science social technology theory web2.0

• 15 Mar 06
  

  jamesj0

  .imported blog-this delicious

• 29 Jan 06
  

  Howard Silverman

  This number of 150 has become "Dunbar's Number" and has been
  popularized by various very popular business books such as Malcolm
  Gladwell's The Tipping Point.

  networks blogs

• 03 Nov 05
  

  Robyn Kalda

  articles groupdynamics socialsoftware onlinecommunities

• 18 Oct 05
  

  duzzio

  General

Would you like to comment?

Join Diigo for a free account, or sign in if you are already a member.