What is phonotactic probability, and how does it affect infants' speech perception?

What is phonotactic probability, and how does it affect infants' speech perception?

• A. The probability of using long words in early speech
• B. The likelihood of seeing gestures accompanying speech
• C. The likelihood of certain sound sequences; higher-probability sequences are perceived more easily
• D. The frequency of babbling syllables in isolation

Answer: (C)

Phonotactic probability is the likelihood that a given sequence of sounds occurs in a language, based on that language’s sound patterns and constraints. For infants, this probability shapes speech perception because they learn which sound sequences are common and permissible in their language. When they encounter high-probability sequences, those sequences fit their expectations, making processing easier and faster, which helps with distinguishing sounds, tracking where words begin and end, and mapping sounds to meaning. Low-probability sequences are rarer or violate phonotactic rules, so they tend to be more difficult to process. This is not about the length of words, gestures, or isolated babbling syllables; it’s about how likely specific sound sequences are within the language and how that expectancy simplifies perception.

Phonotactic probability is the likelihood that a given sequence of sounds occurs in a language, based on that language’s sound patterns and constraints. For infants, this probability shapes speech perception because they learn which sound sequences are common and permissible in their language. When they encounter high-probability sequences, those sequences fit their expectations, making processing easier and faster, which helps with distinguishing sounds, tracking where words begin and end, and mapping sounds to meaning. Low-probability sequences are rarer or violate phonotactic rules, so they tend to be more difficult to process. This is not about the length of words, gestures, or isolated babbling syllables; it’s about how likely specific sound sequences are within the language and how that expectancy simplifies perception.