Behavior is simply a response to environmental stimuli. The behavioristic approach states that all behaviors are learned through the interaction with the environment through a process named €œconditioning€.Behavioristic theory of language learning and acquisition includes: Trial and error:Thorndike believed that children learn language through trial and error till they finally succeed. It represents that learning is the result of associations forming between stimulus and responses.Children make a number of trials some responses do not give satisfaction to them, but they go on making further trials till they get a satisfactory response.Operant conditioning theory:B.F Skinner believed that children learn language through operant conditioning. Language is learned through imitation and reinforcement.Children receive €œrewards€ for using language in a functional manner. Skinner also tells that children learn language through imitation of others and prompting.Hence, it is clear that a child learns language through trial and error is evident from the behaviouristic theoretical perspective on language learning.Hint'Lev Vygotsky', a Soviet psychologist, has propounded the "Socio-cultural Theory". This theory implies the idea that social interaction is the most important part of language learning and plays a crucial role in the learner's cognitive development. Nativist theory of language focuses on the inborn capacity of infants to learn a language. The Nativist Theory suggests that we're born with a specific language-learning area in our brain. Cognitive theory of language development supports that language is dependent on a child's understanding of the concept before verbalizing it.