Which of the following is NOT considered a phonological process common in early childhood speech?

The option identified as not a phonological process common in early childhood speech is indeed correct. Phonological processes refer to the patterns that young children use to simplify speech sounds as they develop their language skills. These processes, including cluster reduction, liquid gliding, and nasal assimilation, involve systematic errors that children make when pronouncing words.

Cluster reduction entails omitting one or more consonants from a consonant cluster, which often occurs as children learn to articulate more complex sound combinations. Liquid gliding involves replacing a liquid consonant (like /l/ or /r/) with a glide consonant (like /w/ or /j/). Nasal assimilation is when a child changes a sound to make it more similar to a nasal sound that is present in a word.

On the other hand, semantic generalization is related to language use and vocabulary rather than sound production. It refers to the tendency of children to apply knowledge of words or concepts to broader categories than what is specific. Thus, while semantic generalization is a relevant concept in language acquisition, it does not match the definition of phonological processes, which focus specifically on the articulation and phonetic aspects of speech development.