An articulation disorder can be defined as the incorrect production of speech sounds due to which of the following?

An articulation disorder is characterized by difficulties in producing specific speech sounds correctly, which typically stems from the incorrect movement of the articulators, such as the tongue, lips, and palate. When the articulators do not function effectively or are not coordinated properly, it results in the individual producing sounds inaccurately, such as substituting one sound for another, omitting sounds, or distorting sounds. This type of disorder focuses specifically on the physical aspect of speech sound production rather than cognitive or emotional factors.

The other options involve different aspects of language and communication. Faulty grammar usage pertains to sentence structure and syntax, which is not a direct indicator of articulation. Poor vocabulary relates to word knowledge and usage, which impacts language comprehension and expression, but does not specifically affect the articulation of speech sounds. Emotional factors can influence speech fluency and confidence but do not directly cause articulation issues. Therefore, the correct response highlights the mechanical and physical nature of articulation disorders.