The purpose of this research synthesis is to identify the reported effects of Computer-Assisted Language Learning (CALL) on students' language proficiency. In order to achieve this objective, the advantages and disadvantages of this approach were analyzed, as well as the perceptions and attitudes that the participants of the educational process presented. The results showed that CALL is effective in developing and improving learners' language skills and subskills. Furthermore, this approach presented more positive perceptions and positive attitudes than negative ones. The number of advantages were greater than the number of disadvantages. Finally, there were some recommendations based on the issues identified through the analysis of the data, which could serve for further research studies.