Definition of ACT-R ACT-R ACT-R is a model of information processing that integrates a network representation for declarative knowledge and a production-system representation for procedural knowledge. References Sternberg, R. Sternberg, K & Mio, J. (2012). Attention. Cognitive Psychology (6t ed.). Mason, Ohio: Cengage.        

Definition of Adaptive Control of Thought Adaptive Control of Thought (ACT) In Adaptive Control of thought (ACT), procedural knowledge is represented in the form of production systems. Declarative knowledge is represented in the form of propositional networks. References Sternberg, R. Sternberg, K & Mio, J. (2012). Attention. Cognitive Psychology (6t ed.). Mason, Ohio: Cengage.          

Definition of Accessibility Accessibility the degree to which we can gain access to the available information.     References Sternberg, R. Sternberg, K & Mio, J. (2012). Attention. Cognitive Psychology (6t ed.). Mason, Ohio: Cengage.