The course involves the cognitive processes of memory, thought and language. More specifically, the following will be presented thoroughly: (1) the operations and mechanisms of memory (coding, storage, retrieval, organization, oblivion), (2) the operations and mechanisms of thought (categorization, organization of concepts, conceptual change, reasoning, logical faults and bias, problem solving, decision making), and (3) the mechanisms of linguistic processing (production and comprehension). The main theoretical models that have been proposed for the interpretation of these cognitive operations and main methodological approaches to their study will be presented and compared.