Our team at the service of behavior analysis.

Alexandra Lecestre

– Psychologist and BCBA

Alexandra graduated from the Master « psychologie de l’enfance et de l’adolescence en analyse appliquée du comportement” from Lille 3 University in 2008. She became a behavior analyst in 2016 by obtaining an international certification, BCBA.

Co-founder of BA-eService (Home-based intervention in ABA for people with developmental delay or behavioral disabilities) in 2009, she supervises a team of technicians trained in ABA.

Always seeking to promote ABA, she has already participated in conferences, training courses for professionals and parents, in translating books, etc…

Jean-René Courtault

– President

Jean-René has a PhD in computer science. He did his thesis in the field of resource logics, with a particular interest in modeling, proof and verification.

After obtaining his PhD, he worked in many fields of activity including banking, insurance, healthcare, and retail. All these missions led him to take a particular interest in the following question: how to design software that is easy to use and so simple to maintain?

From this reflection was born our software Aba-Assistant, which is both intuitive and efficient.


Laurent Keser

– General manager

Laurent has been a behavior technician (RBT) since 2015, he is also certified TAGteach level 1 and holds a certificate in Organizational Behavior Management from the Florida Institute of Technology.

Co-founder of BA-eService (intervention specializing in ABA at home for people with developmental or behavioral disabilities) in 2009, he initiated a first data digital portal for this team in 2011.

Vice-President and founding member of the Organisation National des Professions de l’Analyse du Comportement – ONPAC.

Very involved in the development of ABA, he notably created the information website, gave university training on disability and ABA, presented several posters at international conferences of ABAI, translated tools for functional and preference assessments and participate in the translation into French of reference book in ABA (Behavioral Modification of Miltenberger and Ethics for Analysts of Behavior of Bailey).