There are several theories about how language development skills are acquired
. One theory is that language is learned through reinforcement and imitation. An example of this would be when a parent rephrases what the child has said. Another theory is that language is unique to humans only. This theory states that all children already know how to produce sentences once vocabulary is learned. The last theory consists of two parts, the first being that the brain is able to detect patterns such as in speech. And the second is the desire to be understood by others as well as understanding others. This would suggest that social interaction is very important in acquiring language development skills.