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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 Tran​si​tio​ner​.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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