Senior researcher



julie.vallee ( at )

Research theme
Social inequalities – Neighborhood effects – Segregation – Daily mobility – Resources accessibility – Area based interventions – Health – Open science

Transversal subjects
Mobility and territories – Urban fabrics – Data and protocols in the digital humanities

Géographie-cités • Campus Condorcet
5 cours des Humanités 93322 Aubervilliers cedex, France

I am conducting research devoted to spatial mechanisms of social inequalities in urban areas, with a particular interest towards people’s daily mobility.

Recent publications (in English)

Intersectional approach of everyday geography. Environment and Planning B: Urban Analytics and City Science. Preprint HALArXiv

Everyday geography and service accessibility: the contours of disadvantage in relation to mental health. Annals of the American Association of Geographers. ⟨hal-03343684

Professional positions

  • From 2020. Senior CNRS researcher  in the Géographie-cités laboratory, Paris, France
  • From 2017. Associate member in EQUITY team (Centre d’épidémiologie et de recherche en santé des populations – CERPOP), Toulouse, France
  • 2013-2015. Visiting scholar in the department of Social and Preventive Medicine of the Université de Montréal, Canada
  • 2010-2020. Junior CNRS researcher in the Géographie-cités laboratory, Paris, France
  • 2009-2010. Post-doctoral student , Research team on the social determinants of health and healthcare – Inserm), Paris, France
  • 2004-2008. PhD student at University Paris Ouest la Défense. Visiting student (3 years) at the Institut de Recherche pour le Développement, Vientiane, Lao PDR
  • 2004. Master student in epidemiology unit, Institut Pasteur, Dakar, Senegal


  • 2019. Habilitation à Diriger les Recherches (Université Panthéon-Sorbonne – Paris I) : The daycourse of place effects. Text
  • 2008. PhD. in Geography (Université Paris Ouest la Défense) : Urbanisation et santé à Vientiane (Laos) : les disparités spatiales de santé dans la ville. Text
  • 2004. Master in Health Geography, University of Paris Ouest La Défense
  • 2002. Master in GIS and Remote Sensing, University of Toulouse

Project coordination

Cities around the clock

Mobiliscope is a free and open-source web mapping platform for the interactive exploration of cities around the clock. Using large origin-destination surveys, the Mobiliscope displays maps and segregation indices in 58 city regions (49 in France, 6 in Canada and 3 in South America) over the 24h a day.

A relational approach to place effects on health in urban areas

In Paris (France) and Montreal (Canada), we adopt a relational approach to place effects considering people’ place experiences though regular activity locations and perceived neighborhoods. The project aims at exploring the spatial mechanisms involved in social inequalities in health through the following question: how people’s place experiences shape social inequalities in accessibility, and ultimately neighbourhood effects on health?


  • Team EQUITY (Embodiment, social inequalities, lifecourse epidemiology, cancer and chronic diseases, interventions, methodology) included in CERPOP (Centre d’épidémiologie et de recherche en santé des populations), Inserm/Université Toulouse Paul Sabatier , Toulouse, France
  • Centre de recherche en santé publique (CReSP) de l’Université de Montréal, Québec, Canada
  • Laboratoire SphereLab (Spatial Health Research Lab), Montréal, Québec, Canada
  • Institut Pierre Louis d’Epidémiologie et de Santé Publique, Inserm – Université Pierre et Marie Curie, Paris, France


Postdoctorate researchers

  • Giovanna Fancello. Putting social networks into spatial contexts – HANC project [2020]
  • Stavros Spyrellis. Variation in shape of perceived neighbourhoods in the Paris region – RelatHealth project [2017]
  • Guillaume Le Roux. Social segregation around the clock in the Paris region – RelatHealth project [2016]

PhD. students

  • Paul Cukierman. “Neighborhood effects in a time of climate change: local drivers for the spread of low-carbon lifestyles” [started in 2022].
  • Maxime Guinepain. “De l’appartenance sociale aux pratiques spatiales. Mobilités et lieux de vie des petites classes moyennes”. In co-supervision with Jean Rivière from ESO Laboratory, Nantes [started in 2020].
  • Catherine Mangeney. “Enjeux et défis de la délimitation des zonages prescriptifs de l’action publique. L’exemple du zonage déficitaire en médecins généralistes en France et plus spécifiquement en Île-de-France” [defended in 2023].
  • Anaïs Dubreuil. “Everyday spatial practices during the transition to adulthood: biographical trajectories and activity spaces of young adults living in Montreal”. In co-supervision with Lena Sanders, UMR Géographie-cités [defended in 2020]. PhD. manuscript
  • Marion Patte. “Residential Environment and Healthy Aging in Luxembourg and Europe”. In co-supervision with Lena Sanders and with support of Olivier Klein and Philippe Gerber from LISER, Luxembourg [defended in 2020].

Master students

  • Various students in geography, urban planning and social epidemiology.

Publications (in english)

From 2019

Vallée J & Lenormand M. 2023. Intersectional approach of everyday geography. Environment and Planning B: Urban Analytics and City Science. (10.1177/23998083231174025). Preprint HALArXiv

Frohlich K, Vallée J, Ellaway A, Macintyre S. 2022. Chapter « Place », Key Concepts in Medical Sociology, 3rd Edition (edited by Lee F. Monaghan & Jonathan Gabe). SAGE Publications. pp 46-51. ISBN 9781526465887. (hal-03624695)

Vallée J, Shareck M, Kestens Y, Frohlich K. 2022. Everyday geography and service accessibility: the contours of disadvantage in relation to mental health. Annals of the American Association of Geographers, 112:4, pp 931-947. (hal-03343684) (10.1080/24694452.2021.1940824)

Vallée J, Shareck M, Le Roux G, Kestens Y, Frohlich K. 2020. Is accessibility in the eye of the beholder ? Social inequalities in spatial accessibility to health-related resources in Montréal, Canada. Social Science & Medicine. (hal-02389856) (10.1016/j.socscimed.2019.112702)

Fernandes A, van Lenthe F, Vallée J, Sueur C, Chaix B. 2020. Linking physical and social environments with mental health in old age : a multisensor approach for continuous real-life ecological and emotional assessment. Journal of Epidemiology & Community Health. (hal-03080172) (10.1136/jech-2020-214274)

Delage M, Baudet-Michel S, Fol S, Buhnik S, Commenges H, Vallée J. 2020. Retail decline in France’s small and medium-sized cities over four decades. Evidences from a multi-level analysis. Cities. (10.1016/j.cities.2020.102790)

Glenn N, Frohlich K, Vallée J. 2020. Socio-spatial inequalities in smoking among young adults : what A ‘Go-along’ study says about local smoking practices. Social Science & Medicine. (10.1016/j.socscimed.2020.112920)

Perchoux C, Brondeel R, Wasfi R, Klein O, Caruso G, Vallée J, Klein S, Thierry B, Dijst M, Chaix B, Kestens Y, Gerber P. 2019. Walking, trip purpose, and exposure to multiple environments : A case study of older adults in Luxembourg. Journal of Transport & Health. Vol 13, pp 170-184. (10.1016/j.jth.2019.04.002)


Vallée J. 2018. Urban isolation and daytime neighborhood social composition from twitter data. PNAS – Proceedings of the National Academy of Sciences (letter). 115(51). (hal-01972789L) (10.1073/pnas.1816937115)

Shareck M, Datta G D, Vallée J, Kestens Y, Frohlich KL. 2018. Is Smoking Cessation in Young Adults Associated With Tobacco Retailer Availability in Their Activity Space ? Nicotine and Tobacco Research. (10.1093/ntr/nty242)

Vallée J, 2017. The daycourse of place. Social Science & Medicine. Vol 194, pp 177-181. (hal-01598147) (10.1016/j.socscimed.2017.09.033)

Vallée J, 2017. Challenges in targeting areas for public action. Target areas at the right place and at the right time. Journal of Epidemiology and Community Health. 71(10), pp. 945-946. (hal-01598129) (10.1136/jech-2017-209197)

Chaix B, Duncan D, Vallée J, Vernez-Moudon A, Benmarhnia T, Kestens Y, 2017. The “residential” effect fallacy in neighborhood and health studies : formal definition, empirical identification, and correction, Epidemiology 28(6), pp 789–797. (hal-01685554L) (10.1097/EDE.0000000000000726)

Le Roux G, Vallée J, Commenges H, 2017. Social segregation around the clock in the Paris region, Journal of Transport Geography, 59, pp 134-145. (halshs-01472039) (10.1016/j.jtrangeo.2017.02.003)

Kestens Y, Chaix B, Gerber P, Desprès M, Gauvin L, Klein O, Klein S, Köppen B, Lord S, Naud A, Payette H, Richard L, Rondier P, Shareck M, Sueur C, Thierry B, Vallée J, Wasfi R, 2016. Understanding the role of contrasting urban contexts in healthy aging : An international cohort study using wearable sensor devices (The CURHA study protocol), BMC Geriatrics. 16:96. (10.1186/s12877-016-0273-7)

Shareck M, Kestens Y, Vallée J, Datta G, Frohlich K, 2016. The added value of accounting for activity space when examining the association between tobacco retailers and smoking among young adults. Tobacco Control 25:4 406-412. (10.1136/tobaccocontrol-2014-052194)

Vallée J, Le Roux G, Chaix B, Kestens Y, Chauvin P, 2015. The ‘constant size neighbourhood trap’ in accessibility and health studies. Urban Studies. Vol. 52(2) 338–357. (hal-01598081) (10.1177/0042098014528393)

Frohlich K, Shareck M, Vallée J, Abel T, Agouri R, Cantinotti, M, Daniel M, Dassa C, Datta G, Gagné T, Leclerc B.S, Kestens Y, O’Loughlin J, Potvin L, 2015. Cohort Profile : The Interdisciplinary Study of Inequalities in Smoking (ISIS), International Journal of Epidemiology. (2017) 46 (2) : e4. (10.1093/ije/dyv036)

Before 2015

Vallée J, Shareck M, 2014, Can we claim spatial misclassification of neighborhood exposures without any reference to people ? Re : Examination of How Neighborhood Definition Influences Measurements of Youths’ Access to Tobacco Retailers- A Methodological Note on Spatial Misclassification. American Journal of Epidemiology – Letter to the Editor 179(5) : 660–662. (10.1093/aje/kwt436)

Chaix B, Méline J, Duncan S, Jardinier L, Perchoux C, Vallée J, Merrien C, Karusisi N, Lewin A, Brondeel R, Kestens Y, 2013. Neighborhood environments, mobility, and health : Towards a new generation of studies in environmental health research. Revue d’Epidemiologie et de Santé Publique. 61 Suppl 3 : 139-45. (10.1016/j.respe.2013.05.017)

Vallée J, Chauvin P, 2012. Investigating the effects of medical density on health-seeking behaviours using a multiscale approach to residential and activity spaces. Results from a prospective cohort study in the Paris metropolitan area, France. International Journal of Health Geographics 11:54. (hal.inserm-00780570) (10.1186/1476-072X-11-54)

Vallée J, Cadot E, Roustit C, Parizot I, Chauvin P, 2011. The role of daily mobility in mental health inequalities : the interactive influence of activity space and neighbourhood of residence on depression. Social Science & Medicine, 73 (8), pp 1133-1144. (hal-00624590) (10.1016/j.socscimed.2011.08.009)

Vallée J, Cadot E, Grillo F, Parizot I, Chauvin P, 2010. The combined effects of perceived activity space and neighbourhood of residence on participation in preventive health-care activities. The case of cervical screening in the Paris metropolitan area (France). Health & Place, 16(5), 838-852. (hal.inserm-00510306) (10.1016/j.healthplace.2010.04.009)

Vallée J , Thaojaikong T, Moore C E, Phetsouvanh R, Richards A L, Souris M, Fournet F, Salem G, Gonzalez JP, Newton P, 2010. Contrasting spatial distribution and risk factors for past infection with scrub typhus and murine typhus in Vientiane City, Lao PDR. Plos Neglected Tropical Diseases 4(12). (10.1371/journal.pntd.0000909)

Vallée J, Dubot-Pérès A, Ounaphom P, Sayavong C, Bryant J, Gonzalez JP, 2009. Spatial distribution and risk factors of dengue and Japanese encephalitis virus infection in urban settings : The case of Vientiane, Lao PDR. Tropical Medicine & International Health, 14 (9), pp 1134-1142. (hal-00623663) (10.1111/j.1365-3156.2009.02319.x)

Barennes H, Simmala C, Odermatt P, Thaybouavone T, Vallée J, Newton P, Vongprachan P, Martinez-Useel B, Vongprachan P, Strobel M, 2009. Postpartum traditions and nutrition practices among urban Lao women and their infants” in Vientiane, Lao PDR. European Journal of Clinical Nutrition, 63(3), pp 323-31. (10.1038%2Fsj.ejcn.1602928)

Vallée J, Souris M, Fournet F, Bochaton A, Mobillion V, Peyronnie K, Salem G, 2007. Sampling in health geography : reconciling geographical objectives and probabilistic methods. An example of a health survey in Vientiane, Lao PDR. Emerging Themes in Epidemiology, 4:6. (10.1186/1742-7622-4-6)