5 papers
Concave Rationalization with an Ideal Point: An Afriat Theorem and an Application to Survey Design
Avner Seror
This paper develops an Afriat-type characterization of concave rationalization with an unknown ideal point. We show that, for each candidate peak, a finite system of linear inequal…
Measuring Hidden Consumer Heterogeneity with Revealed Preferences
Avner Seror
Consumer heterogeneity in revealed-preference data is larger than bilateral rationality tests can reveal. We construct a continuous nonparametric metric of this hidden heterogeneit…
How Many Mechanisms? Measuring Parsimony in Risky Choice
Avner Seror
Behavioral theories rest on parsimony: a small number of mechanisms organizing many decisions. We define a Maximum Rule Concentration Index that measures how parsimoniously a datas…
A Random Rule Model
Avner Seror
We model stochastic choice as environment-dependent switching among a small library of deterministic decision rules. A Random Rule Model generates menu-level choice probabilities v…
The Moral Mind(s) of Large Language Models
Avner Seror
As large language models (LLMs) increasingly participate in tasks with ethical and societal stakes, a critical question arises: do they exhibit an emergent "moral mind" - a consist…