Cognitive Psychology Chapter 7Concepts and knowledge representation Concepts: mental representations of classes of items.When we treat distinct objects as the same as other distinct objects.To represent all the distinct object that make up the categories concerned.Dealing in concepts rather than in distinct individual objects is clearly an efficient way to work and emerges as an inevitable result of who the brain responds to stimulation, in that similar stimuli evoke similar activation patterns and by association will arouse similar memories and action tendencies.Concepts allow us to organize information in long-term semantic memory very efficiently into hierarchical structures.Overall, our long-term knowledge about the world is based on concepts and relations among concepts. Also, representations of current situations are in terms of concepts.All higher-level mental concepts involves imagining possible actions in terms of concepts.Visual images convey information as to what an object looks like and the image associated with a concept would seem likely to be important in using that concept.Imagery: the mental representations of sensory properties of objects, experienced as like perceiving the object but with less vividness than in reality. Despite the pervasive role of concepts in cognition, there is no universal agreement on the best way of define concepts in a whole.Definitional approach Some concepts are well defined and clear black and white definitions can be given.Well-defined concepts...