The Sahara is a desert primarily because it is located ____________.

Most cells in the body reproduce through a process called ______.

A researcher who believes that heredity, maturational processes, and evolution are primarily responsible for development emphasizes nurture over nature.

What is the term for the Freudian periods in which unconscious drives are focused on different parts of the body?

One of the most important criticisms of Freud’s theory is that it ______.

The understanding that death is final, irreversible, and inevitable typically emerges in what age range?

Which term means the extent to which variation among people on a given characteristic is due to genetic differences?

Maturation of thought processes and the tools used to obtain knowledge, become aware of the world, and solve problems are involved in what type of development?

______ development is characterized by slow and gradual change, whereas ______ development is characterized by abrupt change.

What makes opioid dependency difficult to treat?