ABSTRACT
The term cluttering designates a conglomerate of symptoms and characteristics displayed in varying degrees by affected individuals. No single aspect is sufficient to determine the diagnosis; it is the clustering of certain traits that constitute this syndrome 1 (see St. Louis & Schulte, chapter 14 this volume). Cluttering is a speech-language disorder, but many authors, such as Weiss (1964), have argued that the symptoms also may include non-verbal motor behaviour, temperament, and attention deficits. 2
