Which of the following does the development of articulatory skills NOT include?

The development of articulatory skills primarily focuses on the physical aspects of speech production, which includes the ability to move the articulators (like the tongue, lips, and jaw) and establishing a phonetic repertoire. This development is crucial as it enables individuals to produce the sounds necessary for speech.

Acquiring the ability to move articulators is fundamental because it involves mastering how to coordinate these physical movements effectively to create different speech sounds. Additionally, learning and establishing a phonetic repertoire is essential as it encompasses the range of sounds that a person can articulate, which is vital for clear communication.

However, while auditory training is certainly beneficial for overall speech development and enhances listening skills, it is not directly involved in the physical execution of speech sounds. Hence, a specific type of auditory training is not a component of developing articulatory skills, making it the correct answer in this context. This highlights the distinction between the physical production of speech and the auditory processing that supports it.