عنوان مقاله [English]
نویسنده [English]چکیده [English]
Default inheritance is one of the critical notions in network approaches to language which consider linguistic knowledge to be comprised of constructional nodes at different levels of abstraction and hierarchical relations among them. According to this notion properties are inherited from higher to lower nodes unless a lower node already has other specifications for a property. The importance of this mechanism becomes clear when describing a set of constructions which show some differences despite sharing common features. Using the notion of default inheritance enables us to keep the generalizations governing similar constructions and justify the differences among them at the same time. It also makes it possible to show the connectedness of such constructions in the language network without the need for labeling the slightly deviated instances as exceptional. Through the application of construction morphology and focusing on its interpretation of default inheritance known as motivation, the present paper tries to explain the role of word formation patterns in the production and understanding of complex words which do not necessarily correspond to their governing patterns regarding all their form-meaning specifications. To this end, instantiations of three Persian word formation patterns, «-zɑr», «-eʃ» and «ɑmiz», are investigated and the existence of apparently exceptional instances associated with these patterns is justified through the three concepts constructional schemas, default inheritance and gradient motivation.