3.1. Agreement
In LIS, we can distinguish three types of agreement: person, number and spatial agreement. Person and number agreement refer to the phonological modifications that verbs display to encode person and number features, whereas spatial agreement defines the locative source and/or locative goal of an event. As shown in LEXICON 3.2, only agreement and spatial verbs can convey agreement through modification of some of the phonological features of the verb root: point of articulation, direction of the path-movement, orientation of the palm. The following sections describe how each verb class marks agreement of person, number and location with its arguments. We will see that also dedicated non-manual markers play a crucial role in verbal inflection, in that they can occur with the verb sign to disambiguate arguments in space.
