Browsing by Autor "Diego Jorrat"

Now showing 1 - 20 of 20

Conflicting identities and cooperation between groups: experimental evidence from a mentoring programme
(Royal Society, 2025) Diego Jorrat; Marı́a Paz Espinosa; María José Vázquez-De Francisco; Pablo Brañas‐Garza
Well-functioning human societies require the integration of vulnerable minorities, yet leading scientific theories conflict on how easily diverse groups cooperate. We experimentally investigate cooperation in 14 centres of a mentoring programme where participants have two possible natural identities-individuals raised under legal guardianship, suffering a negative stereotype (G; n = 112) and users without such a social stigma (NG; n = 82). Participants played a prisoners' dilemma game with an anonymous partner from the same centre (centre-ingroup) and from another centre (centre-outgroup). For individuals without a history within-centre interaction, we find centre-outgroup favouritism among G and centre-ingroup favouritism among NG. However, the longer G individuals have been in the centre the more centre-ingroup favouritism they display, while the opposite is true for NG. Regardless of within-centre history, both G and NG individuals cooperate less with the centre-ingroup (versus outgroup) as the probability that the centre-ingroup is G increases. Thus, we observe patterns of centre-outgroup and natural-outgroup favouritism among G which challenge theoretical frameworks exclusively focusing on ingroup favouritism. Our findings highlight the roles of system-justification and stereotypes in intergroup cooperation and have implications for the integration of vulnerable groups and the optimization of social policy programmes.
Coordination with and without incentives
(RELX Group (Netherlands), 2025) Pablo Brañas‐Garza; Diego Jorrat; Pablo Lomas
Future Time Reference and Time Preferences on the Individual Level
(RELX Group (Netherlands), 2025) Tamás Keller; Hubert János Kiss; Diego Jorrat
How Do Subnational Governments React to Shocks to Different Revenue Sources? Evidence from Hydrocarbon-Producing Provinces in Argentina
(RELX Group (Netherlands), 2021) Martín Besfamille; Diego Jorrat; Osmel Manzano; Pablo Sanguinetti; Pablo Sanguinetti
How Do Subnational Governments React to Shocks to Revenue Sources? Evidence from Argentina
(RELX Group (Netherlands), 2019) Martín Besfamille; Diego Jorrat; Osmel Manzano; Pablo Sanguinetti
How Do Subnational Governments React to Shocks to Revenue Sources? Evidence from Argentina
(RELX Group (Netherlands), 2019) Martín Besfamille; Diego Jorrat; Osmel Manzano; Pablo Sanguinetti
Using the exogenous variability in intergovernmental transfers and hydrocarbon royalties, based on the fiscal regime that prevailed in Argentina from 1988 to 2003, we jointly estimate the effects that changes in these public revenues had on provincial public consumption and debt. When receiving a one-peso increase in intergovernmental transfers, provinces spent 32 centavos of each peso on public consumption and 43 on debt repayment. But when hydrocarbon-producing provinces received a one-peso increase in royalties, they used 75 centavos for debt repayment. These dissimilar reactions to revenue increases are robust to different specifications of the basic regressions. Finally, we provide two alternative explanations for them: the higher volatility of hydrocarbon royalties (relative to intergovernmental transfers) and the exhaustible nature of these revenues.
Lack of Control: An Experiment
(RELX Group (Netherlands), 2021) Benjamin Prissé; Diego Jorrat
Lack of Control: An Experiment
(RELX Group (Netherlands), 2021) Benjamin Prissé; Diego Jorrat
Paid and hypothetical time preferences are the same: Lab, field and online evidence
(Cornell University, 2022) Pablo Brañas‐Garza; Diego Jorrat; Antonio M. Espín; Ángel Sánchez
The use of real decision-making incentives remains under debate after decades of economic experiments. In time preferences experiments involving future payments, real incentives are particularly problematic due to between-options differences in transaction costs, among other issues. What if hypothetical payments provide accurate data which, moreover, avoid transaction cost problems? In this paper, we test whether the use of hypothetical or one-out-of-ten-participants probabilistic—versus real—payments affects the elicitation of short-term and long-term discounting in a standard multiple price list task. We analyze data from a lab experiment in Spain and well-powered field and online experiments in Nigeria and the UK, respectively (N = 2,043). Our results indicate that the preferences elicited using the three payment methods are mostly the same: we can reject that either hypothetical or one-out-of-ten payments change any of the four preference measures considered by more than 0.18 SD with respect to real payments.
Parents’ Knowledge And Predictions About The Age Of Menarche: Experimental Evidence From Honduras
(2022) Michela Accerenzi; Pablo Brañas‐Garza; Diego Jorrat
<title>Abstract</title> Access to accurate, timely and age-appropriate information about menarche is an essential part of menstrual health. Reliable evidence shows that girls primarily obtain information from their mothers and/or other female family members, therefore, it is important to determine parents’ knowledge and their predictions about other parents’ knowledge of the age of menarche. To this end, we performed a pre-registered study with data collected from 360 households in Santa Rosa de Copán, Honduras. We implemented a novel procedure to avoid social desirability bias whereby participants answered two separated questions: <italic>i</italic> ) their knowledge about the age of menarche (self-report) and <italic>ii</italic> ) to predict or guess the modal response of the other participants regarding the same question (modal guess). Participants were paid according to accuracy. Both questions appeared randomly in the survey. Results show that parents’ knowledge is high in the study area. Recent studies indicate the age of menarche at 12 years old and 56.11% of the sample gave the same response while 62.78% hit the modal value. We estimated the impact of different sociodemographic variables and found only marginal differences. Interestingly, people with formal education and women tend to respond with lower predictions.
Parents’ Knowledge And Predictions About The Age Of Menarche: Experimental Evidence From Honduras
(2022) Michela Accerenzi; Pablo Brañas‐Garza; Diego Jorrat
<title>Abstract</title> Access to accurate, timely and age-appropriate information about menarche is an essential part of menstrual health. Reliable evidence shows that girls primarily obtain information from their mothers and/or other female family members, therefore, it is important to determine parents’ knowledge and their predictions about other parents’ knowledge of the age of menarche. To this end, we performed a pre-registered study with data collected from 360 households in Santa Rosa de Copán, Honduras. We implemented a novel procedure to avoid social desirability bias whereby participants answered two separated questions: <italic>i</italic> ) their knowledge about the age of menarche (self-report) and <italic>ii</italic> ) to predict or guess the modal response of the other participants regarding the same question (modal guess). Participants were paid according to accuracy. Both questions appeared randomly in the survey. Results show that parents’ knowledge is high in the study area. Recent studies indicate the age of menarche at 12 years old and 56.11% of the sample gave the same response while 62.78% hit the modal value. We estimated the impact of different sociodemographic variables and found only marginal differences. Interestingly, people with formal education and women tend to respond with lower predictions.
Paying £1 or Nothing in Dictator Games: No Differences
(RELX Group (Netherlands), 2024) Pablo Brañas‐Garza; Antonio M. Espín; Diego Jorrat
Recruiting Experimental Subjects Using WhatsApp
(Technical University of Munich, 2020) Diego Jorrat
The aim of many experiments is to estimate the effect of different interventions on subjects' decision making. However, obtaining large samples and internal validity is challenging. This paper presents an alternative device at almost no cost that can easily provide a very large number of participants (700 in 5 hours). We asked 14 students to invite their WhatsApp contacts to participate in an online experiment. The students created a total of 80 diffusion groups with 25 contacts each. Using the diffusion groups as clusters, we ran a cluster randomization procedure in order to assign subjects to a framing experiment (treatment + control). We obtained the same level of attrition, duplicates and uninvited subjects across the treatment and control groups. Moreover, the experiment yielded consistent results in line with the framing literature.
Recruiting experimental subjects using WhatsApp
(2020) Diego Jorrat
The aim of many experiments is to estimate the effect of different interventions on subjects’ decision making. However, obtaining large samples and internal validity is challenging. This paper presents an alternative device at almost no cost that can easily provide a very large number of participants (700 in 5 hours). We asked 14 students to invite their WhatsApp contacts to participate in an online experiment. The students created a total of 80 diffusion groups with 25 contacts each. Using the diffusion groups as clusters, we ran a cluster randomization procedure in order to assign subjects to a framing experiment (treatment + control). We obtained the same level of attrition, duplicates and uninvited subjects across the treatment and control groups. Moreover, the experiment yielded consistent results in line with the framing literature.
Reproducibility package for Eliciting Probabilities In The Field: Beads Vs Sliders
(2026) Ericka G. Rascon-Ramirez; Lorenzo Estepa Mohedano; Diego Jorrat; Victor Orozco
Strategic uncertainty in collective action problems
(RELX Group (Netherlands), 2025) Pablo Brañas-Garza; Antonio Cabrales; Maria Paz Espinosa; Diego Jorrat
Strategic Uncertainty in Collective Action Problems12
(RELX Group (Netherlands), 2025) Pablo Brañas‐Garza; Antonio Cabrales; María Paz Prendes Espinosa; Diego Jorrat
The baking of preferences throughout the high school
(2024) Antonio Alfonso; Pablo Brañas‐Garza; Diego Jorrat; Benjamin Prissé; María José Vázquez de Francisco
The purpose of this study is to examine whether girls and boys exhibit different risk and time preferences and how this difference evolves during the critical phase of adolescence. To achieve this, we use a large and powered sample of 4830 non-self-selected teenagers from 207 classes across 22 Spanish schools with very different socioeconomic backgrounds. Alongside time and risk preferences, we also collected additional information about class attributes, social network measures, students' characteristics, and the average level of economic preferences of friends. These measures enable us to account for potentially omitted variables that were not considered in previous studies. The results indicate that there are no significant gender differences in time and risk preferences, but older subjects exhibit more sophisticated time preferences and higher risk aversion. We also perform an exploratory heterogeneity analysis, which unveils two important results: first, cognitive abilities play a critical role in the development of time and risk preferences; second, interaction within the class social network does matter.
The baking of preferences throughout the high school
(Elsevier BV, 2025) Antonio Alfonso; Pablo Brañas‐Garza; Diego Jorrat; Benjamin Prissé; María José Vázquez-De Francisco
To Pay or Not to Pay: Measuring Risk Preferences in Lab and Field
(RELX Group (Netherlands), 2020) Pablo Brañas‐Garza; Lorenzo Estepa; Diego Jorrat; Víctor Orozco-Olvera; Ericka Gabriela Rascon Ramirez