Skinner's book "Verbal Behavior", first published in 1957, presents his ideas on the influence of language which can be used in research and analysis behavioral. The main argument presented by Skinner was that verbal behavior was different from other forms of behavior and deserved to be separated into a distinct category, and Skinner viewed language development as the result of the mediation of other people while behavior non-verbal was imposed by the physical environment. Skinner defined the basic verbal operants in his analysis of verbal behavior, which include mand, tact, intraverbal, echoic, and autoclitic operants, and he distinguished the type of consequence for each operant. Additionally, the theory defines audience as a discriminating stimulus that will affect language development because it gives signs of possible rewards or punishments. There has been no previous research on the subject, thus the lack of data available to write the book and the lack of experiments in the book, and the theory has been subjected to harsh criticism and ignored in the academic community for several decades after its publication (McPherson, Bonem, Green and Osborne, 1984). Although Skinner's theory of language development was not accepted in the academic community nor applied frequently in research until the 1990s (Sundberg & Michael, 2001), Skinner's theory of verbal behavior successfully defines the Verbal operants relevant to basic behavioral principles. This essay will show that the main implication in the development of this theory is the harsh criticism of Skinner's theory as ill-founded and composed of plagiarized traditional ideas. Despite the criticisms against Skinner's theory, it is questionable whether the criticism itself proves..... . middle of article......heels of language development, application of Skinner's theory could exclude these errors and prove effective in its applications. Rather than criticizing Skinner's theory based on the lack of empirical evidence presented in his book, or denying the effectiveness of the theory for several seemingly irrelevant reasons, such as the unclear definition of its correlation with a neurological theory and genetics (MacCorquodale, 1970), empirical research should provide clear evidence of the credibility of Skinner's theory. Although it is not necessary for the entire theory to be successful, several aspects of Skinner's theory have been shown to be effective in conducting behavioral interventions (Sundberg & Michael, 2001). Recent studies show increased use of Skinner's language development framework, so criticism against the theory has obviously been a major implication in its development..