Spanish adaptation of Yamagishi General Trust Scale

The significance that trust has in social exchange relationships has led to a growing amount of literature dealing with this phenomenon at a theoretical and an applied level. With the aim of conducting trust research by means of an instrument with established reliability and validity, the General Trust Scale (Yamagishi & Yamagishi, 1994) was translated into Spanish. The sample comprised 626 participants. Results indicate that the Spanish adaptation has satisfactory psychometric properties: test's reliability (α = .862) and ítems' discrimination (a ≥ 1.58). There was no differential ítem functioning regarding the participants' gender, but differences aroused as regards to their age. The relationship with several dispositional and behavioral variables was assessed, being significant its correlation with Agreeableness (r = .376) and, for the women, also with Openness to Experience (r = .135).