A supposedly mature adult reverting to childlike behavior is typical of ______

According to family systems theory, when John (45-year old husband and father of 3) entered into treatment for his alcohol use disorder of 22 years duration, his family is going to happily, enthusiastically, and positively respond and experience this change in him as a big relief.

a. true b. false

In Piaget's theory, the stage of development between birth and 2 years of age, in which the individual develops the ability to form mental representations, is the ______ stage

a. concrete-operational c. sensory-motor b. preoperational d. formal-operational