This chapter outlines a view of Construction Grammar in which the mental grammar of speakers is shaped by the repeated exposure to specific utterances, and in which domain-general cognitive processes such as categorization and cross-modal association play a crucial role in the entrenchment of constructions. Under this view, all linguistic knowledge is viewed as emergent and constantly changing. The chapter emphasizes that the process of chunking along with categorization leads to the creation of constructions. It also provides semantic/pragmatic and phonetic arguments for exemplar representation and a discussion of the role of type and token frequency in determining the structure of the schematic slots in constructions, as well as the productivity of constructions.