This examination of the most popular plays of Rodolfo Usigli, Salvador Novo, and Emilio Carballido shows their concern with Mexico's social problems--especially as evidenced by their representation of contemporary social classes through characterization. Treating socio-political and sexual problems with special emphasis upon psychology, Usigli combines melodramatic reality and imagination. Psychoanalysis is also important in Novo's characterizations; his themes and characters express a social criticism which often becomes a malicious satire of Mexican life. Carballido's symbolic surrealism creates an atmosphere of fantasy, with scenic neo-realism representing everyday life, bourgeois ideas, and the Mexican psychology.