The newborn’s brain is about 25 percent of its adult weight by birth; by the second birthday, the brain is about ________ percent of its adult weight.  

Which of the following is an example of an A-not-B error?        

Jayden’s father hung a bright yellow tennis ball over his crib and dangled it whenever he stood by him. Within a day or two of doing this, Jayden was seen kicking his legs in the air to reach the ball successfully. Jayden’s action is an example of the ________ substage given by Piaget.        

Newer more sophisticated eye-tracking equipment has allowed researchers to study all of the following EXCEPT:        

The evidence obtained from the studies conducted on maternal benefits of breast feeding for mothers indicates that breast feeding        

The dynamic systems view of motor development states that the developing of motor skills is a(n) ________ process.        

Richard is a five-month-old baby. His parents frequently sit by his side to cuddle him or to speak to him in loud and affectionate tones. Richard seems to enjoy this attention very much and makes cooing sounds in response to his parents’ warm interactions with him. Richard’s act of cooing to obtain parental attention is a function of the ________ substage given by Piaget.        

Which of the following situations testifies that the infant has developed a sense of object permanence?        

The ________ aspect is at the forefront of emotion in infancy.        

Which of the following is a self-conscious emotion?