In general, one's risk of developing a stress-induced illness goes up with ______ scores on the College Life Stress Inventory

According to Piaget, it is not until adolescents are around ___________ years old that they are fully settled in the formal operational stage

a. 13 c. 15 b. 14 d. 16

Piaget’s assimilation meant modifying existing schemes to fit experiences

Indicate whether this statement is true or false.