Fast mapping is a laboratory task, not a cognitive capacity.

Fast Mapping is a laboratory task that typically involves an experimenter creating a nonsense name for an object the participant has never seen before. We demonstrate how researchers' use of the term Fast Mapping has extended beyond its core meaning as a laboratory task to more abstractly denote an internal process, a skill that children employ in their everyday lives, and an inherent capacity. We argue that such over-extension is problematic.