Saaidi Lahlou graduated as Statistician Economist at the Ecole Nationale de la Statistique et de l'Administration Economique (ENSAE, Paris), holds a PhD in Social Psychology (Ecole des Hautes Etudes en Sciences Sociales, Paris, and degrees in Human Ecology and Ethology, and in Human Biology. He set up several large observation instruments, some of which are now part of the national French statistical systems (such as the Observatoire National des Consommations Alimentaires, now included in the Agence Française pour la Sécurité Sanitaire des Aliments).
After studying facial mimics of newborns in a CNRS-INSERM research unit, he joined the CREDOC (Research center for Lifestyles and Social Policies, where he directed the Consumer Forecasting Department from 1987 to 1993. He then joined EDF R&D Division where he headed the Internal Social Forecast Group from 1993 to 1998, devoted to organization studies. He has been Head of Cognitive Studies (Information, Forecast and Normalization Department) at EDF R&D Division from 1998 to 2000. Since 2000 he is Head of the Laboratory of Design for Cognition at EDF R&D. This user lab runs an industrial testbed for futuristic hybrid (physical/digital) work and home environments, where "real" users perform their everyday activities under observation. He is a member of the board of the SCORE (Sustainable Production and Consumption) EU funded research programme. Lahlou has published in the areas of social psychology.