Greg started smoking when he was 17 years old and now at 40 finds that he can't get through a day without a cigarette without feeling shaky. Greg is most likely _________ to cigarettes

In the concrete operational stage, children have _____ but NOT _____

a) object permanence; naive idealism. b) hypothetico-deductive thinking; symbolic function. c) experience with the personal fable; egocentrism. d) naive idealism; reflexive behaviors.

When reinforcement is given as a function of the passage of time, it is called a ratio schedule

Indicate whether this statement is true or false.