ResumoO obje vo do experimento foi inves gar os efeitos de diferentes mbres no processo de aprendizagem de discriminações de acordes musicais. Dezessete estudantes universitários par ciparam. O procedimento consis u em ensinar relações condicionais entre quatro diferentes acordes e suas representações pictóricas (i.e., X, Xm, Xm-5e X+5). Para nove par cipantes, os acordes foram tocados por um piano (Grupo-piano) e, para outros oito par cipantes, os mesmos acordes foram tocados por um violão (Grupo-violão). Em ambos os grupos, os par cipantes aumentaram a sua porcentagem de respostas corretas ao longo do procedimento de ensino. A análise dos dados também sugere que os par cipantes do Grupo-violão apresentaram maiores percentuais de acerto quando comparados com os par cipantes do Grupo-piano. Trabalhos recentes que u lizaram acordes em tarefas de discriminação condicional desconsideraram questões relacionadas ao mbre e nossos resultados sugerem que essa variável poderia modular o processo de aprendizagem e deve ser considerada em futuros estudos sobre o tema. Palavras-chave: mbre, discriminação condicional, acordes musicais, estudantes universitários AbstractThe present experiment aimed to inves gate the eff ects of diff erent mbre in the learning process of musical chord discrimina ons. Seventeen college students par cipated. The procedure was developed for teaching condi onal rela ons among four diff erent musical chords and its pictorial representa ons (i.e., X, Xm, Xm-5e X+5). Nine par cipants were given a teaching procedure in which musical chords were played by a piano (Piano Group) and other eight par cipants were given a teaching procedure in which the same musical chords were played by an acous c guitar (Guitar Group). In both groups, par cipants increased their percentage of correct responses throughout the teaching procedure. Beyond that, data analysis also suggests the Guitar Group par cipants showed higher percentage of correct responses when compared to the Piano Group par cipants. The most recent works that used musical chords in condi onal discrimina on tasks did not consider issues related to the mbre. Nonetheless, our fi ndings suggest that this variable could modulate the learning process and must be considered in futures studies about this ma er. Keywords: mbre, condi onal discrimina on,musical chords, college students Resumen Este experimento tuvo como obje vo inves gar los efectos de diferentes mbres en el proceso de aprendizaje de discriminaciones de acordes musicales. Diecisiete estudiantes universitarios par ciparon. El procedimiento fue desarrollado para la enseñanza de relaciones condicionales entre cuatro diferentes acordes musicales y sus representaciones pictóricas (i.e., X, Xm, Xm-5e X+5). Nueve par cipantes recibieron
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