Pedro has learned that he can lose himself in a good book, which helps him escape his abusive father. Researchers refer to this as:

What tests did Piaget use to determine whether children had entered the concrete operations stage?

A) Conservation problems B) Intelligence tests C) The pendulum problems D) Deductive reasoning tests

Freud began his treatment approach, psychoanalysis, with the treatment of ______

a. hysteria c. somatization disorder b. hypochondriasis d. dissociative amnesia