¡Hola!
I am Losner Briones, a doctoral researcher in the philosophy of the social sciences at the Department of Logic, History and Philosophy of Science at UNED, in Madrid. I am currently pursuing my PhD as an FPI [Formación de Personal Investigador] fellow within the research project Evidence and Mechanisms in the Social Sciences (EVISOC), funded by the Spanish Ministry of Science, Innovation and Universities. I am also involved in the projects New Approaches to Evidence: Theoretical and Practical Developments (NATE) and Data Modelling and the Problem of Ambiguity of Experimental Results (ModAmbEx), likewise funded by the Ministry. In addition, I am a member of the METIS research group in philosophy, based at UNED.
My primary research examines foundational questions concerning causal inference and policy evaluation in randomised field experiments on redistributive interventions, with a particular emphasis on measurement, construct validity, and evidence.
This research currently follows two closely related lines of inquiry, with particular attention to cash transfer experiments. The first examines the capacity of randomised field experiments to measure heterogeneous treatment effects and welfare outcomes in light of methodological critiques of evidence-based policy. Building on this, the second investigates whether, and to what extent, the Stable Unit Treatment Value Assumption (SUTVA), which underpins randomised field experiments, limits the assessment of community-level spillover effects.
More broadly, I address epistemological and methodological questions concerning evidence-based approaches in the social and health-regulatory sciences, particularly those relating to causal extrapolation.
If you would like to get in touch, you can email me to losner [dot] briones [at] fsof [dot] uned [dot] es
Latest news:
Currently undertaking a four-month research stay (June-October) at the Valencia Philosophy Lab (Valencia, Spain), hosted by Saúl Pérez-González.
Accepted for presentation at the 2026 Conference of the European Network for the Philosophy of Social Sciences!
Use the menu options above to learn more.