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Erasmus Centre for
Neuroeconomics
networks
history
economic
thought
by
clement
levallois
feb. 22 2010
Erasmus Centre for
Neuroeconomics
presentation of network analysis
case study
Network analysis (NA) for historians of economic thought
Revisiting neuroeconomics through network analysis (NA)
Erasmus Centre for
Neuroeconomics
Styles in history of science
Critical analysis, hermeneutics
Rational reconstruction
Cliometrics
Sociological stance (post-modern?)
And still others!
Erasmus Centre for
Neuroeconomics
Different methods, different data
sources
Erasmus Centre for
Neuroeconomics
Networks: tool for relational analysis
Economist A
Economist B
co-authors
Journal A
Journal B
citation
Univ A
Univ B
Movements of faculty
Concept A
Concept B
Frequency of co-occurrence
senior
junior
Number of
previous
works
Number of
previous
works
Erasmus Centre for
Neuroeconomics
Network analysis: tool for relational
analysis
schools of thought “Cambridge circus”
evolution of an intellectual tradition “Institutional economics”
influence of an economist, a concept “how quickly did the Keynesian
revolution spread?”
Internationalization, interdisciplinarity in science can we learn more
about the European economists who became refugees in the US?
Erasmus Centre for
Neuroeconomics
softwares
1997
1991
2002 2007 2008
Erasmus Centre for
Neuroeconomics
Pajek
Erasmus Centre for
Neuroeconomics
Example of visualization with Gephi
Erasmus Centre for
Neuroeconomics
sociology
1961 - Anatol Rapoport (“sociograms”)
1967 - Stanley Milgram (“small worlds”)
1973 - Granovetter (“strength of weak ties”)
Erasmus Centre for
Neuroeconomics
scientometrics
 formation of co-author networks, co-citation networks
 maps of science
 case studies of scientific disciplines
 study of interdisciplinarity
Erasmus Centre for
Neuroeconomics
social network analysis
Statistical modeling of the formation of social ties
dynamic analysis (evolution through time)
theoretical research in network properties
 case studies: Facebook etc.
Erasmus Centre for
Neuroeconomics
many related fields
 library sciences
 computing sciences
 sociology of science
 history of science ? history of economic thought?
Erasmus Centre for
Neuroeconomics
Data: search for “network*” in Abstracts, for journals in J-stor.
The British Journal for the
Philosophy of Science
ISIS
Philosophy of Science
PSA: Proceedings of the
Biennial Meeting of the
Philosophy of Science
Association
Science, Technology, &
Human Values
Social Studies of Science
Erasmus Centre for
Neuroeconomics
Networks, searched in
“history of science and
techniques”
Networks, searched in
“social sciences and
humanities”
Erasmus Centre for
Neuroeconomics
EJHET, JHET and HOPE:
7 results for “network” in total
In preparation:
Ross B. Emmett (Michigan State
University) on workshops at Chicago
(presented at HISRECO 2009, in Anvers)
Erasmus Centre for
Neuroeconomics
Research question:
The evolving interdisciplinary
relationships between economics and
biology
Erasmus Centre for
Neuroeconomics
1900s 1950s 2000s
social sciences
establish their
independence
vis-à-vis natural
sciences
low point of
relationships between
natural and social
sciences
a revival?
Erasmus Centre for
Neuroeconomics
1900-1999
Occurrencesenmillièmesdutotaldesdocumentspubliés
1900 1920 1940 1960 1980 2000
406080100120
‰ of economic publications employing an expression
borrowed from biology (“natural selection”, “physiology”, …)
Y axis:
Erasmus Centre for
Neuroeconomics
0. Neuroeconomics in two slides
1. Evolutionary economics in two slides
2. Picturing these fields in terms of journal coverage
3. Picturing these fields in terms of department affiliations
4. Intermezzo: a method to define the perimeter of a scientific field
5. Evolution of interdisciplinarity through time
6. Interdisciplinarity and international science
Erasmus Centre for
Neuroeconomics
0. Neuroeconomics in two slides
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
1. Evolutionary economics in two
slides
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
2. Picturing these fields in terms
of journal coverage
Rafols, Porter and
Leydesdorff (2009)
Cognitive Sci.
Agri Sci
Biomed Sci
Chemistry
Physics
Engineering
Env Sci & Tech
Matls Sci
Infectious
Diseases
Psychology
Social Studies
Clinical Med
Computer Sci
Business & MGT
Geosciences
Ecol Sci
Econ Polit. & Geography
Health & Social Issues
Global Map of Science, 2007
221 SCI-SSCI Subject Categories
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
Eco, geo, polit
Psychology
Clinical
medicine
Biomedical
sciences
Cognitive
sciences
Chemistry
Computer
sciences
Erasmus Centre for
Neuroeconomics
search in abstract,
keyword or titles
1999-2009
Articles and Reviews
- Science Citation Index Expanded
- Social Sciences Citation Index
- Arts & Humanities Citation Index
309 results (evo eco)
277 results (neuroeco)
List the “subject
categories”
of the journals where
they appear
Subject Area Record Count % of 277
NEUROSCIENCES 94 33.94%
ECONOMICS 55 19.86%
BEHAVIORAL SCIENCES 35 12.64%
MULTIDISCIPLINARY SCIENCES 31 11.19%
BIOLOGY 19 6.86%
… … …
… … …
PSYCHOLOGY, BIOLOG 10 3.61%
(Leydesdorff & Rafols, 2009 & in
preparation)
Erasmus Centre for
Neuroeconomics
Visualization in GEPHI:
evolutionary eco VS neuroeco
Erasmus Centre for
Neuroeconomics
3. Picturing these fields in terms of
department affiliations
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
4. Intermezzo: a method to define
the perimeter of a scientific field
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
“Who are the most influential neuroeconomists?”
Survey sent to… #invitations #respondents #response rate
ISI authors of
“neuroeconomics”
422 125 30%
SCOPUS authors of
“neuroeconomics” 356 104 29%
Members of Society for
Neuroeconomics 2009
169 111
66%
TOTAL 684 254 37%
=> Survey sent by email to 684 scientists in Oct / Nov 2009
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
Does this new definition influence
the interdisciplinary spread of
neuroeconomics, in terms of
journals?
Erasmus Centre for
Neuroeconomics
Mapping of neuroeconomics with a
keyword search (“neuroeco* in title and
topic) - same graph as in section 2.
Mapping of neuroeconomics after a survey
Erasmus Centre for
Neuroeconomics
5. Evolution of interdisciplinarity
through time
Erasmus Centre for
Neuroeconomics
Erasmus Centre for
Neuroeconomics
6. Interdisciplinarity and
international science
[Credits are due to Loet Leydesdorff for a review paper (2009) on geolocalisation]
Erasmus Centre for
Neuroeconomics
1244 articles by
neuroeconomists
Reprint author addresses
extracted
coded by Subject categories
Geocoder
Map makingGPS Visualizer
Erasmus Centre for
Neuroeconomics
Biomedical sciences
Cognitive sciences
Psychology Economics
Clinical medicine
Business and Management
Erasmus Centre for
Neuroeconomics
Biomedical sciences
Cognitive sciences
Psychology Economics
Clinical medicine
Business and Management
Erasmus Centre for
Neuroeconomics
Biomedical sciences
Cognitive sciences
Psychology Economics
Clinical medicine
Business and Management
Erasmus Centre for
Neuroeconomics
Conclusion (1/2)
• Neuroeconomics and evolutionary economics
are published across natural and social
sciences
• BUT there is a strong difference in terms of
who is a practitioner.
• It must be related to the nature of the
interdisciplinary relationship: analogous vs
empirical
Erasmus Centre for
Neuroeconomics
Conclusion (2/2)
• Neuroeconomics, as reflected by the survey, displays
a broader coverage of fields than one would suspect.
=> definitions matter
• Neuroeconomics seem to be relatively stable
through time, tbc.
• Strong differences in geographical coverage.
=> Europe: one centre in economics! [caveat]
Erasmus Centre for
Neuroeconomics
Perspectives
Erasmus Centre for
Neuroeconomics
• Qualitative analysis on small datatasets
• The next frontier: J-Stor!
• Networks as a tool for the diffusion of your
research (Flash, web-based applications)
Ex: http://seinecle.110mb.com/flash/test_map/Untitled-1.html
Erasmus Centre for
Neuroeconomics
Thank you!
www.clementlevallois.net

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Networks for historians of science - an oldie prez from 2010