¿Cómo puede el méto do bayesiano contribuir a la investigación en psicología y educación? Numerous authors have analysed the debate on statistical tests as well as the recommendations from different professional associations about its use. In the same way many revisions and exhaustive analyses of other frequentist methods such as power analysis, or confidence intervals determination have been published. In this work we complement these studies with an analysis of the main reasons supporting the viability of Bayesian methods and the way they can complement the frequentist methodology in Psychology and Education.