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- Categorization
 - grouping together the same sounds, and distinguishing them from other sounds
 - Phoneme
 - the smallest unit of speech (a sound)
 - Sensitive period
 - a time in development when the brain is especially ready to learn a skill
 - Speech perception
 - listening to speech
 - Speech production
 - speaking
 - Statistical learning
 - computing how likely it is that certain events (in this case sounds or syllables) occur compared to others