* Articulo de investigacion. ** Programa de Psicologia, Universidad de San Buenaventura CREAD Valledupar, Calle 16 A No 5-54, Valledupar, Cesar, Colombia. Correos electronicos: elberto.plazas@usbmed.edu.co; monica.moron@ usbmed.edu.co; humbertosarmientob@hotmail. com; sarariza8@hotmail.com; westlanita@latinmail.com *** Programa de Psicologia, Universidad de San Buenaventura,San Benito (Centro). Carrera 56C Nro. 51-90 Medellin, Colombia. Correo electronico: carlos.patino@usbmed.edu.co elBerto Plazas, monica moron, antonia santiago, hUmBerto sarmiento, sara ariza, carlos Patino 358 Un i v e r s i ta s Ps yc h o l o g i ca v. 9 no. 2 m ayo-ag o s t o 2010 information about the peers relationship and prosocial and antisocial behavior were collected through peer nominations. We found that female tends to be more popular, whereas the male gender seems to be more rejected and excluded. Moderate correlations were found between prosocial and antisocial behavior and social preference and social impact. It was also found that women are more prosocial and have greater social preference in elementary, but the trend changes at the university, where men have a higher social preference and are more prosocial.