Fourteen-month-old Tony would most likely be in a sensorimotor stage that involves

Dixon suggests the cognitive changes that take place as we age should be examined in terms of "gains and losses." What is one area of gain?

a. increased useful field of view b. increased traditional problem-solving skills c. increased compensatory skills d. increased working memory

Angelina used random assignment to form three groups of participants. She then plans to test all

three groups twice, once before the administration of her IV and once after. How would you best describe Angelina's groups? A) correlated groups B) mixed groups C) repeated measures D) independent groups