“…Gender prejudice (and violence as its most extreme form) is a worldwide phenomenon (WHO, 2002). From a sociopsychological perspective there has been much research on perceptions of inequity (e.g., Shields, Zawadzki, & Johnson, 2011), but not so many on interventions to reduce sexism with remarkable exceptions (Becker & Swim, 2011Cundiff, Zawadzki, Danube, & Shields, 2014;Kilmartin et al, 2008;Zawadzki, Shields, Danube, & Swim, 2014). The purpose of this work is twofold: On the one hand, to describe an intervention to reduce gender prejudice, increase inequity awareness and train future professionals in psychology and educational sciences for intervening in this area; on the other hand, to provide empirical evidence of its efficacy to reduce sexism; sexual prejudice; essentialist, system-justifying beliefs; proclivity to violence against women; and to increase collective actions and proequity values.…”