Our next seminar speaker at CEU is Julian Martinez-Iriarte (UC Santa Cruz), who will talk about “Bounds for within-household encouragement designs with interference". You are all cordially invited to his in-person seminar. Time and venue: September 23, Tuesday, 11.15am – 12.30pm, QS B-505, at CEU (51 Quellenstrasse, 1100 Vienna). Abstract: "We study partial identification of direct and spillover effects in settings with strategic interaction and discrete treatments, outcomes, and instruments. Motivated by encouragement designs, we consider intra-household games shaped by a policymaker’s randomized assignment of incentives. Treatment take-up is modeled as a pure-strategy Nash equilibrium among k decision-makers, with outcomes determined by their joint take-up profile. We characterize the set of latent types consistent with equilibrium behavior and exclusion restrictions, and derive the full space of compatible type profiles. Additional structure—such as symmetry, strategic complementarity or substitution, monotonicity, and homogeneity—can be imposed flexibly to tighten the identified set. For any combination of assumptions, we compute sharp bounds on parameters of interest via a simple Python/R linear programming routine. We formalize a notion of non-refutable and irrelevant restrictions, provide their geometric characterization, and discuss implications for empirical practice. Our framework enables researchers to assess both the identifying power and robustness of structural assumptions in applied settings." Speaker’s website: https://sites.google.com/view/julianmi/ Registration, till 12pm, the day before the seminar, is required at: https://forms.office.com/pages/responsepage.aspx?id=E1nE2VN24kuSC72wOGOBhDPxLiYqs2FKjgPAVi1DSIpUQUtVN1BQTkxRR0FTQTBESDBBSU1DSDRNUS4u&route=shorturl For any question, please contact the CEU seminar organizer, Timea L. Molnar, at molnartl@ceu.edu.