Classifier Predicates

A type of sign language construction in which signers use their hands to represent the location, movement, size, shape, and spatial relationships of objects and people. Classifier predicates are among the most frequent and complex spatial phenomena in American Sign Language, allowing signers to position, move, trace, or re-orient imaginary objects in the space in front of them. A classifier handshape is chosen from a closed set based on the characteristics of the entity being described, such as whether it is a vehicle, person, or animal, and what aspect is being conveyed (surface, position, motion). Classifier predicates are essential for natural ASL communication and pose significant challenges for automated sign language generation systems.