​​Message : Jean Piaget believed that around age 11, young people enter the formal operational stage, in which they develop the capacity for advanced cognitive thinking. *** What are the major characteristics of the formal operational stage? *** What is the opposing argument that challenges Piaget's notion of a new, discrete stage of cognitive development at adolescence? ***Do all individuals reach the formal operational stage? Be sure to include in your response information from the textbook (JAMES M. HENSLIN 12TH EDITION)or other psychology-specific sources​.