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A mother hands her baby a rattle, saying, “Here you are.” She then gently takes the rattle away, smiling and saying, “Thank you.” She does this repeatedly, letting the baby keep the rattle for several seconds each time and encouraging the baby to offer the rattle. Eventually, the baby takes the rattle, holds it for a few seconds, and then holds it out to her mother and smiles. This is an example of:  

If you subscribe to Paul Baltes’s perspective of life-span development, which of the following statements would you NOT agree with?  

Zone of proximal development (ZPD) is Vygotsky’s term for:  

Erik Erikson’s developmental theory consists of _____ stages that last from the first year of life to _____.  

The cephalocaudal pattern is the sequence in which the earliest growth always occurs at the:  

After a while, self-talk becomes second nature to children, and they can act without verbalizing, thus creating a form of _____, which becomes their thoughts.  

Which of the following is TRUE of mitosis in humans?  

By the time babies are born, they have approximately _____ neurons.  

When Alice speaks to her six-month-old niece, her voice immediately takes on a higher pitch, her speech becomes slower, and she begins using more simplistic words and phrases. This change in Alice’s language behavior provides an example of:  

Babies’ first forms of emotional communication, particularly with parents, are: