Dr. Cross is studying whether the psychological trait of dependency vs. independence changes as one gets older. He collects data from first, fourth, and ninth graders

By middle childhood, nearly all children in developed counties, and a large proportion of children in developing countries, have received ____ and their _____ stronger, which contributes to a lower death rate

a. vitamin B; lungs are b. calcium; heart is c. immunizations; immune system is d. viral infections; muscles are

In the Bai and Bertenthal ( 1992 ) paradigm, the researcher hides an object under one of 2 cups

in the presence of the infant. Next, the researcher either repositions the infant around the table, or turns the table. Finally, the infant is allowed to search for the object. What is the most likely result of this paradigm? A) Most infants are too confused with the manipulations. They may ordinarily solve this task, but not when they or the table are moved. B) The infant is more likely to correctly locate the object in conditions when the table has been repositioned. C) The infant is more likely to correctly locate the object when the infant is repositioned. D) The infant is more likely to locate the object if they are allowed a training session with the task.