Until approximately 200 years ago, how many adults were illiterate?

Which community psychology program has as its main goals to remove conditions that

are conducive to the development of psychological problems and to create conditions that promote sound psychological health? a. Primary prevention b. Secondary prevention c. Tertiary prevention d. Deinstitutionalization e. Community prevention

Piaget's stage theory is composed of a series of four universal stages that occur in a fixed order from birth through adolescence and are, in chronological order,

a. formal operational; concrete operational; preoperational; and sensorimotor. b. sensorimotor; preoperational; concrete operational; and formal operational. c. sensorimotor; formal operational; preoperational; and concrete operational. d. sensorimotor; formal operational; concrete operational; and preoperational.