Browsing by Author "Le Mens, Gaël"

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  • An information sampling explanation for the in-group heterogeneity effect
    Konovalova, Elizaveta; Le Mens, Gaël (American Psychological Association (APA), 2020)
    People often perceive their in-groups as more heterogeneous than their out-groups. We propose an information sampling explanation for this in-group heterogeneity effect. We note that people frequently obtain larger samples ...
  • Categories and levels of aggregation: essays on judgment and decision making
    Woiczyk, Thomas Karl Alfred (Universitat Pompeu Fabra, 2020-11-04)
    In this thesis I explore how people form and are affected by judgments about objects, people, and categories. In particular, I show how the implications are affected by the level of aggregation; both for human judgment and ...
  • Categories, variability, and inferences : essays on human judgement
    Konovalova, Elizaveta (Universitat Pompeu Fabra, 2018-02-21)
    The three chapters of this thesis explore how previous experience and mental categories shape human judgments. Chapter One provides a sampling explanation for the in-group heterogeneity effect - a tendency of people to ...
  • Essays in financial economics
    Gisbert i Rodríguez, Josep (Universitat Pompeu Fabra, 2022-11-09)
    This dissertation studies financial technology adoption, learning from financial information, and inter-temporal decisions. It contains three chapters. Chapter one examines the impact of bank branch closures on fintech adoption. ...
  • Evaluating categories from experience: the simple averaging heuristic
    Woiczyk, Thomas Karl Alfred; Le Mens, Gaël (American Psychological Association (APA), 2021)
    We analyze how people form evaluative judgments about categories based on their experiences with category members. Prior research suggests that such evaluative judgments depend on some experience average, but is unclear ...
  • How politicians learn from citizens' feedback: the case of gender on Twitter
    Schöll, Nikolas; Gallego Dobón, Aina; Le Mens, Gaël (Wiley, 2024)
    This article studies how politicians react to feedback from citizens on social media. We use a reinforcement-learning framework to model how politicians respond to citizens’ positive feedback by increasing attention to ...
  • Revisiting the competency trap
    Denrell, Jerker; Le Mens, Gaël (Oxford University Press, 2020)
    We revisit the competency trap and reexamine when it occurs. We show that a bias against alternatives that improve with practice does not require that learning is myopic in the sense of lacking foresight or failing to ...
  • The few-get-richer: a surprising consequence of popularity-based rankings
    Germano, Fabrizio; Gómez, Vicenç; Le Mens, Gaël (2019-02-01)
    Ranking algorithms play a crucial role in online platforms ranging from search engines to recommender systems. In this paper, we identify a surprising consequence of popularity-based rankings: the fewer the items reporting ...
  • The Few-get-richer: a surprising consequence of popularity-based rankings
    Germano, Fabrizio; Gómez, Vicenç; Le Mens, Gaël (ACM Association for Computer Machinery, 2019)
    Ranking algorithms play a crucial role in online platforms ranging from search engines to recommender systems. In this paper, we identify a surprising consequence of popularity-based rankings: the fewer the items reporting ...
  • The hot stove effect
    Denrell, Jerker; Le Mens, Gaël (Cambridge University Press, 2023)
    People revisit the restaurants they like and avoid the restaurants with which they had a poor experience. This tendency to approach alternatives believed to be good is usually adaptive but can lead to a systematic bias. ...
  • Using machine learning to uncover the semantics of concepts: how well do typicality measures extracted from a BERT text classifier match human judgments of genre typicality?
    Le Mens, Gaël; Kovács, Balázs; Hannan, Michael T.; Pros Rius, Guillem (Society for Sociological Science, 2023)
    Social scientists have long been interested in understanding the extent to which the typicalities of an object in concepts relate to its valuations by social actors. Answering this question has proven to be challenging ...

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