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:''This article has been reviewed on its talk page. Please use the comments to make improvements, if you can.'' Babbling is a stage in child development and a state in language acquisition, during which an infant appears to be experimenting with uttering articulate sounds, but not yet producing any recognizable words. Babbling begins shortly after birth and progresses through several stages as the infant's repertoire expands and vocalizations become more speech-like.〔Oller, D. K. ''The Emergence of the Speech Capacity''. Lawrence Erlbaum Associates, 2000.〕 Infants begin to produce recognizable words usually around 12 months, though babbling may continue for some time afterward. ==In humans== Babbling is a state in language acquisition. These vocalizations do not contain meaning or refer to anything specific. Human infants are not excited or upset when babbling, but instead they will babble spontaneously and incessantly only when emotionally calm. The sounds and expressions of babbling are produced before an infant begins to construct recognizable words. This is mainly due to the immaturity of the vocal tract and neuromusculature at this age in life. Infants first begin vocalizing by crying, followed by cooing and then vocal play. These first forms of sound production are the easiest for children to use. When reaching an age of 6 months, infants are finally able to control the opening and closing of the vocal tract, and upon obtaining this ability, infants begin to distinguish between the different sounds of vowels and consonants. This period is known as the beginning of the canonical stage. During the canonical stage, the babbling involves reduplicated sounds containing alternations of vowels and consonants (e.g.; baba or bobo). By the time an infant reaches 8–9 months, they display productions of more advanced sounds known as variegated babbling. Variegated babbling differs greatly from reduplicated babbling. This stage includes more complex combinations of consonant and vowel syllables (e.g.; babadoobe).〔 By 9–10 months of age, infant babbling begins to resemble the native language of a child. The final stage is known as conversational babbling, or the "jargon stage" (usually occurring by about ten months of age). The jargon stage is defined as "pre-linguistic vocalizations in which infants use adult-like stress and intonation".〔Sroufe, Cooper, & Dehart, 1996, p. 258〕 The general structure of the syllables that they are producing is very closely related to the sounds of their native language and this form of babbling significantly predicts the form of early words. Infants continue to use intonation patterns and timing that matches the characteristics of their language.〔 Most babbling consists of a small number of sounds, which suggests the child is preparing the basic sounds necessary to speak the language to which he is exposed. If babbling occurs during the first year of life, it can typically be concluded that the child is developing speech normally. As the baby grows and changes, his/her vocalizations change as well. Babies use these vocalizations to communicate. They commence vocal development by crying, progress to loud yelling noises, and finally make speech. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Babbling」の詳細全文を読む スポンサード リンク
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