Adolfo J. Cangas, José Jesús Gázquez Linares, María del Carmen Pérez Fuentes
The impact factor is one of criteria more utilized nowadays to evaluate the scientific journals. It is a judgment diffused and applied for the Journal of Citation Reports (JCR) of the Institute of Scientific Information (ISI). The same is easy to compute, but its utility can come influenced for several factors as number of existent publications in a discipline or area, the geographic reach, the kind of papers than a journal accepts, etc. In this sense, the objective of the present study was to analyze the relevance to choose one extensive sample of journals of psychology to evaluate the repercussion in the impact factor The results indicate that there are important changes in some journals. Also, it emphasizes the importance of selfcitations and of citations in international journals to interpret results.