摘要：How is knowledge about concepts organized? Crutch and Warrington (2005) propose that concrete concepts are organized by the degree of overlap in semantic features between concepts (category, e.g., mouse and rabbit). In contrast, Hamilton and Coslett (2008) suggest that concrete concepts are organized by both category and association where association refers to the links between concepts that tend to co-occur in language (e.g., mouse and cheese). Here, we describe a double dissociation in the recognition of category and association relationships for concrete concepts in speakers with chronic aphasia.
