If an event is certain to occur, its probability of occurrence equals 1.00

Which of the following is one of the ways in which Erikson extended Freudian psychoanalysis?

a) He posited another psychosexual stage following the genital stage. b) He researched the impact of fixations in later stages than Freud did. c) He elaborated on the negative functions of the ego. d) He added a social dimension that before was only implied in the psychosexual stage

The five kinds of play identified by Mildred Parten (1932), including solitary, onlooker, parallel, associative, and cooperative, are sequential, such that each subsequent one is more interactive than the previous one

Indicate whether this statement is true or false.