Which of the following is NOT a characteristic of cluttering?

Fluent and clear speech production is indeed not a characteristic of cluttering. Cluttering is typically characterized by a disruption in the fluidity of speech, which can manifest as rapid or irregular speech patterns, leading to a lack of clarity. People who clutter may present with atypical pauses, excessive disfluencies, and may even struggle with organizing their thoughts when speaking, which can affect overall communication.

In contrast, fluent and clear speech production suggests a level of coherence and smoothness that does not align with the disorganization often seen in cluttering. Therefore, recognizing that cluttering impacts speech fluency directly leads to the conclusion that clear speech production is not a defining characteristic of this speech disorder.