Classifiers
Sign languages exhibit the use of polymorphemic constructions referred to as classifiers (not all researchers term these constructions classifiers). These constructions can convey shape, size, motion, location, movement, stative-descriptive, and/or handling information. These constructions are highly inflectable. There have been few studies on how frequent classifiers are used in ASL. Ranging from 4.2% to 7.68% in a corpus study. The nature of classifiers and their constructions allows the speaker to use them more frequently in narratives; one study found this to be 17.7%. Classifiers are highly iconic.
Read more about this topic: American Sign Language