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Neuroscience: our relationship with intelligence

C Factor: a collective IQ

par Pierre-Marie Lledo, Research Director at CNRS, Head of Department at Institut Pasteur, and member of the European Academy of Sciences
On February 18th, 2021 |
4min reading time
Pierre-Marie Lledo
Pierre-Marie Lledo
Research Director at CNRS, Head of Department at Institut Pasteur, and member of the European Academy of Sciences
Key takeaways
  • For Prof. Pierre-Marie Lledo, the idea that a group of people is less intelligent than the sum of its parts is incorrect.
  • As such, researchers have created a “C factor” which can be used to evaluate collective intelligence based on the individual IQ model.
  • This “C factor” takes into account more than just the IQ of an individual: it is enhanced by improving interactions and diversifying profiles within the group.
  • Prof. Lledo says that companies should promote collective intelligence and replace rigid hierarchical structures by a more flexible mode of operation.

Today, com­pan­ies are con­fron­ted with increas­ing eco­nom­ic chal­lenges and dis­rupt­ive changes. Faced with rising unpre­dict­ab­il­ity and com­plex­ity, most fight to sur­vive by redu­cing pro­duc­tion costs or try­ing to obtain new mar­ket shares. Yet, most lead­ers are still ill-pre­pared to handle the unknown.

In this con­text, how can they then give mean­ing to the often-para­dox­ic­al require­ments, expec­ted of them? The over­whelm­ing flood of mod­ern oxy­mor­ons like “prof­it­ab­il­ity” and “sus­tain­able devel­op­ment”, “val­ues” and “worth”, “open innov­a­tion” and “com­pet­it­ive­ness”, or even “social and envir­on­ment­al respons­ib­il­ity” and the “gen­er­a­tion of wealth”? A genu­ine revolu­tion of the social archi­tec­ture presid­ing over ana­lys­is, decision-mak­ing and action is needed to offer new ways of effi­ciently resolv­ing these issues. 

In my opin­ion, we must estab­lish a true col­lab­or­at­ive spir­it with­in com­pan­ies. To do so, new organ­isa­tion­al struc­tures should increase their depend­ence on col­lect­ive intel­li­gence. Because, as Eur­ip­ides said, “none of us know what we all know, togeth­er” 1.

The era of pyr­am­ids is over

For stub­born indi­vidu­als dis­in­clined to admit the import­ance of the bene­fits of the col­lect­ive, the Cov­id-19 crisis provides addi­tion­al evid­ence on the advant­ages of cooper­a­tion. Around the world, epi­demi­olo­gists, doc­tors, research­ers, and engin­eers, are work­ing togeth­er tire­lessly to man­age the flow of data sur­round­ing the pan­dem­ic to mod­el the spread of the vir­us, pre­dict the impact of pos­sible inter­ven­tions or devel­op bio­med­ic­al solu­tions to this health issue.

Open-access and reusable codes were exchanged by labor­at­or­ies across the globe. The world of research and innov­a­tion has under­gone an unpre­ced­en­ted frenzy of col­lab­or­a­tion and pro­duc­tion. In oth­er words, pyr­am­id­al organ­isa­tions that sub­sist here and there in decision-mak­ing bod­ies ruled by a rela­tion­ship of sub­or­din­a­tion will soon be over. Nev­er­the­less, we must acknow­ledge that these ancient (and some­times inscrut­able) dog­mat­ic pyr­am­id­al organ­isa­tion­al struc­tures forged on author­it­at­ive argu­ments are very effi­cient in spe­cif­ic cir­cum­stances – when the envir­on­ment in which they evolved remains stable.

How, then, do we incite col­lect­ive intelligence? 

By first object­ing to the idea that intel­li­gence deteri­or­ates as soon as we come togeth­er to think and decide. Some might believe that indi­vidu­als are the only agents of intel­li­gence, where­as groups show stu­pid­ity. Let us remind them that the cog­nit­ive per­form­ance of an indi­vidu­al relies first and fore­most on the use of tools that are either sym­bol­ic (lan­guage, writ­ing, etc.) or mater­i­al (cal­cu­lat­ing and meas­ur­ing instru­ments, energy, trans­port­a­tion, etc.). Each and every one of us is gif­ted these tools by oth­er people through cul­ture and edu­ca­tion: we did not invent them ourselves.

In fact, most of the know­ledge brought forth by those who pre­tend that intel­li­gence is purely indi­vidu­al comes from the col­lect­ive. Indeed, this know­ledge could not have been built or per­fec­ted without long chains of intergen­er­a­tion­al trans­mis­sion through fam­ily, school or media. Homo sapi­ens inven­ted the concept of “cumu­lat­ive cul­tur­al evol­u­tion”, the phe­nomen­on by which know­ledge is built and improved over time via social learn­ing and cooper­a­tion. Today, we can meas­ure the bene­fits of this col­lect­ive way of think­ing through its deriv­at­ives: demo­cracy, com­merce, art, tech­no­logy, or sci­ence 2.

From the indi­vidu­al to the group 

How can we fully har­ness the resources of an indi­vidu­al – who inher­ently lives and works in a group – to bring out a form of col­lect­ive intel­li­gence? First, col­lect­ive intel­li­gence refers to the cog­nit­ive skills of a soci­ety, a com­munity or a group and their abil­ity to adapt to change. 

This form of col­lect­ive think­ing, far from con­form­ism and stand­ard­isa­tion which are oppos­i­tions of change, brings into exist­ence new cre­ations to enrich our her­it­age, espe­cially under the impulse of a sense of oblig­a­tion urging us to enrich this leg­acy. Col­lect­ive intel­li­gence is only fer­tile when it struc­tures or con­jug­ates sin­gu­lar­it­ies, by facil­it­at­ing dia­logue and act­ive listen­ing, cer­tainly not by elim­in­at­ing dif­fer­ences, or worse yet, by silen­cing dis­sid­ents 3.

Finally, it should be noted that we must study a body of know­ledge before we can enrich it. Know­ledge of the past is the basis for invent­ing and build­ing a col­lect­ive future and for appre­ci­at­ing the degree of intel­li­gence of a human organ­isa­tion, wheth­er it be a com­pany, a gov­ern­ment, an admin­is­tra­tion or an asso­ci­ation. Memory is the corner­stone of col­lect­ive intelligence!

A col­lect­ive IQ? 

If we can meas­ure indi­vidu­al intel­li­gence in terms of per­form­ance at dif­fer­ent tasks, and thus derive an indi­vidu­al “intel­li­gence quo­tient” (the fam­ous IQ), then shouldn’t we be able to assess the intel­li­gence of a group of indi­vidu­als through its abil­ity to per­form col­lect­ive work? Research­ers have thus designed a “C factor” for col­lect­ive intel­li­gence that can be used to meas­ure group per­form­ance based on vari­ous tasks 4.

No need to gath­er people with a high IQ to max­im­ise the col­lect­ive intel­li­gence of a group. What really mat­ters is the diversity of social sens­it­iv­it­ies, skill sets and edu­ca­tion­al back­grounds of its mem­bers, as well as the abil­ity to effi­ciently inter­act and to speak in an equit­able way dur­ing dis­cus­sions. In oth­er words, an intel­li­gent group is not a group made of intel­li­gent indi­vidu­als. Rather, it con­sists of dif­fer­ent indi­vidu­als inter­act­ing on the basis of equity and reci­pro­city, driv­en by shared mor­al val­ues. The authors con­clude: “it seems easi­er to increase the intel­li­gence of a group than that of an indi­vidu­al. Could we increase col­lect­ive intel­li­gence, for example through the use of bet­ter online col­lab­or­at­ive tools?” 5.

Self-organ­ising com­munit­ies have been at the heart of the “open-source” world, giv­ing rise to massive pro­jects such as Wiki­pe­dia or Linux. Today, con­front­ing the com­plex­ity of prob­lems with a diversity of skills is an obvi­ous course of action in prob­lem solv­ing on a glob­al scale and in inter­dis­cip­lin­ary con­texts. Cre­at­ing a bal­anced ratio of power in the work envir­on­ment will only be pos­sible by rebuild­ing the found­a­tions of author­ity. As was the case, for example, when the fam­ily and house­hold struc­tures under­went changes in the ‘50s, some beha­viours nowadays appear inap­pro­pri­ate in the pro­fes­sion­al world because they are det­ri­ment­al to the emer­gence of col­lect­ive intelligence.

I hope that these few lines will have con­vinced our read­ers on the need to estab­lish rela­tion­ships based on equity, reci­pro­city or the sense of oblig­a­tion in com­pan­ies, but also in schools and in all human com­munit­ies – but a few of the key factors favour­ing the expres­sion of a col­lect­ive IQ.

1Read­ers who wish to learn the found­a­tions of col­lect­ive intel­li­gence can read the work of Jean-François Noubel, Intel­li­gence Col­lect­ive, la révolu­tion invis­ible, 2004, The Transition​er​.org. For Pierre Lévy, the French philo­soph­er, col­lect­ive intel­li­gence can be defined as « intel­li­gence spread every­where, con­stantly val­ued, coordin­ated in real time, lead­ing to an effi­cient mobil­iz­a­tion of skills »
2To increase their know­ledge of the emer­gence of col­lect­ive intel­li­gence, read­ers can turn to the excel­lent work of Pierre Lévy ‘L’in­tel­li­gence col­lect­ive. Pour une anthro­po­lo­gie du cyberespace’, Par­is, La Découverte, 1994
3In 1675, New­ton already wrote: ‘If I have seen fur­ther it is by stand­ing on the shoulders of giants’
4Wool­ley et al. (2010). Evid­ence for a Col­lect­ive Intel­li­gence Factor in the Per­form­ance of Human Groups. Sci­ence Vol. 330, Issue 6004, pp. 686–688
5For fur­ther inform­a­tion, the read­er can refer to the work of Pierre Lévy, philo­soph­er, soci­olo­gist, and research­er in the field of inform­a­tion and com­mu­nic­a­tion. On this theme from the same author, Cyber­démo­cratie. Essai de philo­soph­ie poli­tique. Par­is : Édi­tions Odile Jac­ob, 2002. This philo­soph­er sug­gests that a new form of col­lect­ive intel­li­gence, called net­worked col­lect­ive intel­li­gence, has emerged thanks to digit­al tech­no­logy

Contributors

Pierre-Marie Lledo

Pierre-Marie Lledo

Research Director at CNRS, Head of Department at Institut Pasteur, and member of the European Academy of Sciences

Pierre-Marie Lledo’s research focuses on the adaptation and regeneration of neurons in the brain, and their interactions with the immune system. He is Research director at the CNRS, head of the Genes and Cognition laboratory, and director of the Perception and Memory unit and of Plasticity and Development of the Nervous System at the Pasteur Institute.

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