<unk> , or "normal<unk> ", is a lack of language fluency that occurs during early childhood development. It is commonly observed in children ages 2 to 4 years old. This typically occurs as they begin to learn language and communication skills.<unk>  refers to speech that is continually interrupted rather than flowing naturally.<unk>  is most commonly expressed through inconsistencies in speech such as stuttering, repetition, lengthening of sounds and syllables, mistiming, and poor inflection. Speech is a complicated skill involving a series of cognitive and linguistic processes that are both sensorimotor and auditory. As children grow, their language and vocabulary grow exponentially.<unk> es in early speech are typical as their speech skills develop. The most common form of<unk>  in children younger than three years is the repetition of one-syllable words or parts of words. Words or syllables are often repeated in the beginning of their sentences as they try to process how to form the rest of the sentence. Language<unk>  may be common in children as they learn basic language skills throughout the crucial development stages in early childhood.<unk>  is normal in children as they work to acquire language skills and semantic/syntactic processing. About twenty-five percent of children experience some loss in fluency in their linguistic abilities. Some children between the ages of 2 and 6 encounter some obstacles in the path to fluent speech. Fluency in a normal child will typically improve around the age of 4. When attempting to master spoken language, children gradually develop fluent speech. Children go through the same learning patterns while developing their first language as adults do when learning languages other than their native language. Although many adults display types of<unk> , it is usually in relation to comprehending or expressing different materials under stress.<unk>  is a normal part of the acquisition of language. An individual may not be fluent in language due to frequent stuttering or as a result of neurogenic dysfunction. The origin of stuttering is not yet fully understood but parents/adults can mitigate the risk of<unk>  by reducing the conversational demands on their child. Modeling slow, smooth speech and acknowledging the demanding and complex nature of learning language can help.
Developmental dysfluency
Selective mutism
Nonverbal autism
Global developmental delay
Nonverbal learning disorder
Mixed receptive-expressive language disorder
Developmental disability
Language delay