Assessment of proficiency of the communication patterns involves multiple domains. Some of the basic parameters for qualifying child's communicational development as typical are frequency of initiating and responding to communication as well as the variety of communication functions a child displays and the ratio of using the aforementioned. Adults, as well as children, communicate for all sorts of reasons and purposes and a decreased range and variety of these can indicate communicational difficulties which can be a part of a clinical picture of autism spectrum disorder (ASD). Such aberrations can already be noticeable at a fairly young age and persist throughout a person's life. The goal of this paper was to determine if there are differences in communicational characteristics of statistical importance between 10 typically developing children and 10 children with autism spectrum disorder, who had been evened by expressive vocabulary score. Variables as proportion of initiating communication, total number of communication functions and average number of communication acts per minute were compared. The results show a statistically significant difference in one variable, total number of communication functions, in favor of typically developing children who were using a higher number of functions. The other two variables show no statistically significant differences; however, it is important to consider the limitations of this research, especially the small number of participants. Further research comparing typically developing children and children with autism spectrum disorder should be taken to fully determine all of the differences in communicational development between these two groups. These researches should bring new discoveries which are going to abet enactment of conclusions on this topic, which will eventually be applied in more advanced and adequate speech and language therapy interventions.