Calendrier du 08 octobre 2018
Roy Seminar (ADRES)
Du 08/10/2018 de 17:00 à 18:30
Salle R1-09, Campus Jourdan, 48 boulevard Jourdan, 75014 Paris
SADLER Evan (Harvard)
Social Learning, False Information, and Influence Campaigns
In a model of social learning with coarse beliefs, we find qualitatively different outcomes from those in standard models: disagreement is generic, influence is multi-faceted, and information aggregation becomes impossible. We obtain a natural framework in which to study echo chambers and various strategies to manipulate beliefs in a population. I characterize a multi-dimensional measure of influence and evaluate three distinct interventions: changing minds, sowing doubt, and propaganda.
Régulation et Environnement
Du 08/10/2018 de 12:00 à 13:00
salle R1-13, campus Jourdan - 75014 Paris
TOIVANEN Otto (Aalto University)
Welfare effects of R&D support policies
écrit avec Tuomas Takalo & Tanja Tanayama
We build a structural model of the R&D subsidy process incorporating externalities, fixed costs
of R&D, and financial market imperfections. We estimate the model using project level R&D and
subsidy data from Finland. We conduct a counterfactual analysis of an optimal R&D tax credit
policy, the first and second best policies, and laissez-faire with no support and compare them to
the subsidy policy used in Finland. We find that the optimal R&D tax credit rate is 0.24, which is
lower than the observed average R&D subsidy rate (0.36). R&D participation does not vary
across regimes. The R&D investments and spillovers generated by the optimal R&D tax credit
and subsidy policies are significantly higher than under laissez-faire but smaller than in the first
and second best. Neither tax credits nor subsidies improve welfare compared to laissez-faire.