DOI: 10.5061/dryad.rr4xgxdkv
title: Data from: Conflicting identities and cooperation between groups: Experimental evidence from a mentoring program

description: We experimentally investigate cooperation in 14 centres of a mentoring
 program 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). The folder contains the raw data in csv and dta (STATA)
 format and the script (STATA do file) used to define all the variables
 used and conduct all the analyses reported in the article. The analyses in
 the script appear in the exact order of appearance in the text, starting
 from the Methods section and then the Results section.
description: # Data from: Conflicting identities and cooperation between groups:
 Experimental evidence from a mentoring program Associated article: Antonio
 M. Espín, María Paz Espinosa, María J. Vázquez-De Francisco, Pablo
 Brañas-Garza. *Proceedings B.* DOI: 10.1098/rspb.2025.1363 The folder
 contains the raw data in csv (Espin_et_al_ProcB_dataset.csv) and STATA
 (Espin_et_al_ProcB_dataset.dta) format, and the script (STATA do file:
 Espin_et_al_ProcB_script.do) used to define all the variables used and
 conduct all the analyses reported in the article. The analyses in the
 script appear in the exact order of appearance in the associated
 manuscript text, starting from the Methods section and then the Results
 section. Variable description: cod_center - code of the centre the
 participant belongs to id - id code of the participant id_incenter - id
 code of the participant within the centre pop_propGcenter - proportion of
 G users (raised under legal guardianship) in the centre population based
 on administrative data pair_enumerator - code of the pair of enumerators
 conducting the experiment G - dummy variable, =1 if the participant is G
 (raised under legal guardianship) NG - dummy variable, =1 if the
 participant is NG (not raised under legal guardianship) age - participant
 age in years female - dummy variable, =1 if the participant is a female
 spanish - dummy variable, =1 if the participant is Spanish history -
 number of weeks the participant had been in the program before the
 experiment order_infirst - dummy variable, =1 if the participant played
 the prisoners' dilemma (PD) first with the centre-ingroup partner
 coopin - dummy variable, =1 if the participant cooperates (chooses C) with
 the centre-ingroup coopout - dummy variable, =1 if the participant
 cooperates (chooses C) with the centre-outgroup Missing values: following
 the article's Methods section, the script curates the initial sample
 (n=216) in several steps until reaching the final sample (n=194) used for
 the statistical analyses, which does not contain missing values. The key
 part of the Methods section reads as follows: This protocol resulted in a
 sample of 216 participants, with 127 *G* (58.8%) and 89 *NG* individuals
 (41.2%). For 14 participants, the date when they entered the program could
 not be confirmed. The other 7 participants failed to provide an
 unambiguous response for both PD games. Finally, in one centre, only one
 individual showed up, and therefore, their PD decision about the
 centre-ingroup had no real consequences. After excluding these 22
 participants, the final sample consists of 194 individuals (112 *Gs*, or
 57.7%, and 82 *NGs*, or 42.3%). ## Human subjects data We confirm that we
 received explicit consent from participants to publish the de-identified
 data in the public domain. All participants are identified by an anonymous
 numeric code in the data files.