RT Journal Article T1 Personal trust extends cooperation beyond trustees: a Mexican study A1 Acedo-Carmona, Cristina A1 Gomila Benejam, Antoni K1 Autoconfianza AB We studied 2 groups of workers from Oaxaca (Mexico) with different levels of income and education to investigate the role that the affective-based psychological mechanism of personal trust, as evolutionarily acquired, plays on group cooperation. We measured trust levels through some questionnaires and cooperative behaviour through an iteratedprisoner’s dilemma under different conditions and analysed trust networks of group members. While these groups did not differ in trust levels or cooperation among trustees, they did differ in terms of cooperation with other group members. Suchdifferences are related to dissimilarities in the trust network topology—as a measure of group cohesion. These results suggest that some personal trust networks extend cooperation within a group beyond trustees in a way that complements the role of the reputation for indirect reciprocity. PB Wiley YR 2019 FD 2019 LK https://hdl.handle.net/10630/33199 UL https://hdl.handle.net/10630/33199 LA eng NO Acedo-Carmona, C. and Gomila, A. (2019), Personal trust extends cooperation beyond trustees: A Mexican study. Int J Psychol, 54: 687-704. https://doi.org/10.1002/ijop.12500 NO Ministerio de Educación y Ciencia: Beca FPU AP2009-3369Ministerio de Innovación, Ciencia y Tecnología: Proyectos FFI2010-20759 y FFI2013-44007-P.Universidad de las Islas Baleares DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 26 ene 2026