FORMAL OPERATIONS By N., Sam M.S. - 14 Jean Piaget's theory of cognitive development. These are the fully developed intellectual functions of abstract thinking, logical processes, judgement and conceptualisation. FORMAL OPERATIONS: "Formal operations develop in Piaget's 4th stage." Related Psychology Terms Piaget’s Theory of Cognitive Development ADOLESCENCE (Theories) CEREBRAL CORTEX JUNG, CARL GUSTAV (1875-1961) SULLIVAN, HARRY STACK (1892- 1949) MENTAL RETARDATION (PREVENTION, CARE, AND TREATMENT) Identifying Relevant Theories and Models ORAL CHARACTER CREATIVITY TESTS PARALOGICAL THINKING Cite this page: N., Sam M.S., "FORMAL OPERATIONS," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/formal-operations/ (accessed January 24, 2022).